https://caswiki.johnshopkins.edu/api.php?action=feedcontributions&feedformat=atom&user=Gz323 2026-06-04T20:15:13Z User contributions MediaWiki 1.40.0 https://caswiki.johnshopkins.edu/index.php?title=People&diff=586 2015-11-25T17:26:33Z

<p>Gz323: </p> <hr /> <div>You can find the directory of the department here: http://physics-astronomy.jhu.edu/people/<br /> <br /> If you have a Wiki page here, you could create an internal link here.<br /> <br /> == See also ==<br /> * [[Main Page]]<br /> * [[Projects]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=JHU_CAS_Wiki&diff=585 2015-11-25T17:25:00Z

<p>Gz323: </p> <hr /> <div>Welcome to [[JHU CAS Wiki]]!<br /> <br /> * This is a [http://en.wikipedia.org/wiki/Wiki Wiki] for gathering and communicating community information related to working in the [http://sites.krieger.jhu.edu/astronomy/ Center for Astrophysical Sciences], in the [http://physics-astronomy.jhu.edu/ Department of Physics and Astronomy] at [http://jhuu.edu/ Johns Hopkins University]. <br /> <br /> * This wiki is a collaborative effort, so if you see something missing or misspelled or inaccurate or incomplete, please fix it! If you have some experience on some subject, please find a good place or create a page, and put it in!<br /> <br /> * This Wiki is viewable to the public, so please do not post any sensitive or classified information here (nor on Wikipedia - the Wiki for the whole world :-P).<br /> <br /> * The [[Wiki Administration]] page has technical details about the wiki.<br /> <br /> <br /> <br /> == CAS on the Web ==<br /> * The CAS page on the Department website, which has more information regarding logistics, is here: http://physics-astronomy.jhu.edu/research/astronomy-and-astrophysics/ .<br /> * The CAS page on the School website, which has more information about research, is here: http://sites.krieger.jhu.edu/astronomy/ .<br /> <br /> == Getting Started ==<br /> <br /> * [[Visitor Parking | How to get here]]<br /> * [[Getting started in the CAS]]<br /> * [[Computers and Resources]]<br /> * Get started using the [[astrophysics data]]<br /> * [[Coffee | Where to get coffee]]<br /> <br /> == Our work ==<br /> <br /> * [[People]]<br /> * [[Projects]]<br /> <br /> == Typical Weekly Events ==<br /> <br /> * '''Monday'''<br /> ** [[CAS Coffee|CAS (social) Coffee]], social coffee event in CAS, Monday, 10:30 am, Bloomberg, Fifth floor lounge<br /> ** [[Cosmojo|Cosmology Journal Club]], Monday, 12:00 pm, Bloomberg 511<br /> ** [[CAS Wine and Cheese Seminars]], Monday, 4:00 pm, Bloomberg 462<br /> <br /> * '''Tuesday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Tuesday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[Astro-ph Student Journal Club]], Fill me in<br /> <br /> * '''Wednesday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Wednesday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[STScI Colloquium]], Wednesday, 3:30 pm, Bahcall Auditorium<br /> <br /> * '''Thursday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Thursday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[Physics and Astronomy Colloquium]], Thursday, 3:00 pm, Bloomberg, Schafler Auditorium<br /> <br /> * '''Friday'''<br /> ** [[STScI Galaxy Journal Club]], Friday, 12:00 pm, Azafran Cafecon<br /> ** [[PandAs Student Happy Hour]], Friday, 5:00 pm, Bloomberg yard<br /> ** [[Maryland Space Grant Observatory Open House]], Friday, 9:00 pm-12:00 am, Bloomberg Observatory<br /> <br /> == Academic Resources ==<br /> * [[Writing | Writing a paper]]<br /> * [[Presentation | Giving a presentation]]<br /> * [[Programming | Writing code]]<br /> * [[Visualization | Making pretty plots and movies]]<br /> <br /> == &quot;Charm City&quot; Baltimore ==<br /> * [[I don't have a car Panic]]<br /> * [[Travel]]<br /> * [[Housing]]<br /> * [[Restaurants]]<br /> * [[Entertainment]]<br /> * [[Sports]]<br /> <br /> == Wiki Help ==<br /> Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.<br /> <br /> * [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]<br /> * [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]<br /> * [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Cosmojo&diff=584 2015-11-25T17:22:45Z

<p>Gz323: Created page with &quot;The Cosmojo is the cosmology journal club in CAS and takes place at 12:00 pm every Monday in the Bloomberg 511. &#039;&#039;&#039;Where&#039;&#039;&#039;: Bloomberg 511 &#039;&#039;&#039;When&#039;&#039;&#039;: Every Monday at 12...&quot;</p> <hr /> <div>The [[Cosmojo]] is the cosmology journal club in CAS and takes place at 12:00 pm every Monday in the Bloomberg 511. <br /> <br /> '''Where''': Bloomberg 511<br /> <br /> '''When''': Every Monday at 12:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Discussion of recent cosmology papers. Pizza and Soda are served.<br /> <br /> == See also ==<br /> <br /> * [[Astro-ph Coffee]]<br /> * [[CAS Wine and Cheese Seminars]]<br /> * [[STScI Colloquium]]<br /> * [[People]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Coffee&diff=574 2015-10-23T23:30:59Z

<p>Gz323: </p> <hr /> <div>The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (STScI), where you can get coffee at Azafran (in the STScI building). <br /> <br /> On campus, there are several good cafes: Mudd Hall, Gilman Hall, Brody Learning Commons, Levering Hall. Or you can take a long walk and go to Barns &amp; Noble on 33rd street or Starbucks on St. Paul, both on the other side of the campus. A map of these cafes is shown below.<br /> <br /> <br /> [[File:Coffee.jpg | 900 px]]<br /> <br /> <br /> Do you have other recommendations?<br /> <br /> == See also ==<br /> <br /> * [[Main Page]]<br /> * [[Visitor Parking]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=File:Coffee.jpg&diff=573 2015-10-23T23:30:01Z

<p>Gz323: uploaded a new version of &amp;quot;File:Coffee.jpg&amp;quot;: Corrected.</p> <hr /> <div>Where to get coffee</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=JHU_CAS_Wiki&diff=568 2015-10-20T18:59:12Z

<p>Gz323: /* Getting Started */</p> <hr /> <div>Welcome to [[JHU CAS Wiki]]!<br /> <br /> * This is a [http://en.wikipedia.org/wiki/Wiki Wiki] for gathering and communicating community information related to working in the [http://sites.krieger.jhu.edu/astronomy/ Center for Astrophysical Sciences], in the [http://physics-astronomy.jhu.edu/ Department of Physics and Astronomy] at [http://jhuu.edu/ Johns Hopkins University]. <br /> <br /> * This wiki is a collaborative effort, so if you see something missing or misspelled or inaccurate or incomplete, please fix it! If you have some experience on some subject, please find a good place or create a page, and put it in!<br /> <br /> * This Wiki is viewable to the public, so please do not post any sensitive or classified information here (nor on Wikipedia - the Wiki for the whole world :-P).<br /> <br /> * The [[Wiki Administration]] page has technical details about the wiki.<br /> <br /> <br /> <br /> == CAS on the Web ==<br /> * The CAS page on the Department website, which has more information regarding logistics, is here: http://physics-astronomy.jhu.edu/research/astronomy-and-astrophysics/ .<br /> * The CAS page on the School website, which has more information about research, is here: http://sites.krieger.jhu.edu/astronomy/ .<br /> <br /> == Getting Started ==<br /> <br /> * [[Visitor Parking | How to get here]]<br /> * [[Getting started in the CAS]]<br /> * [[Computers and Resources]]<br /> * Get started using the [[astrophysics data]]<br /> * [[Coffee | Where to get coffee]]<br /> <br /> == Our work ==<br /> <br /> * [[People]]<br /> * [[Groups]]<br /> * [[Projects]]<br /> * [[Media]]<br /> * [[Outreach]]<br /> <br /> == Typical Weekly Events ==<br /> <br /> * '''Monday'''<br /> ** [[CAS Coffee|CAS (social) Coffee]], social coffee event in CAS, Monday, 10:30 am, Bloomberg, Fifth floor lounge<br /> ** [[Cosmojo|Cosmology Journal Club]], Monday, 12:30 pm, Bloomberg 511<br /> ** [[CAS Wine and Cheese Seminars]], Monday, 4:00 pm, Bloomberg 462<br /> <br /> * '''Tuesday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Tuesday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[Astro-ph Student Journal Club]], Fill me in<br /> <br /> * '''Wednesday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Wednesday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[STScI Colloquium]], Wednesday, 3:30 pm, Bahcall Auditorium<br /> ** [[STScI Happy Hour]], Wednesday, 5:30 pm (after Colloquium), Azafran<br /> ** [[CAS Postdoc Dinner]], Wednesday, 7:00 pm, good restaurants<br /> <br /> * '''Thursday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Thursday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[Physics and Astronomy Colloquium]], Thursday, 3:00 pm, Bloomberg, Schafler Auditorium<br /> <br /> * '''Friday'''<br /> ** [[STScI Galaxy Journal Club]], Friday, 12:00 pm, Azafran Cafecon<br /> ** [[PandAs Student Happy Hour]], Friday, 5:00 pm, Bloomberg yard<br /> ** [[Maryland Space Grant Observatory Open House]], Friday, 9:00 pm-12:00 am, Bloomberg Observatory<br /> <br /> == Academic Resources ==<br /> * [[Writing | Writing a paper]]<br /> * [[Presentation | Giving a presentation]]<br /> * [[Programming | Writing code]]<br /> * [[Visualization | Making pretty plots and movies]]<br /> <br /> == &quot;Charm City&quot; Baltimore ==<br /> * [[I don't have a car Panic]]<br /> * [[Travel]]<br /> * [[Housing]]<br /> * [[Restaurants]]<br /> * [[Entertainment]]<br /> * [[Sports]]<br /> <br /> == Wiki Help ==<br /> Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.<br /> <br /> * [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]<br /> * [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]<br /> * [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Coffee&diff=567 2015-10-20T18:57:20Z

<p>Gz323: </p> <hr /> <div>The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (STScI), where you can get coffee at Azafran (in the STScI building). <br /> <br /> On campus, there are several good cafes: Croft Hall, Gilman Hall, Brody Learning Commons, Levering Hall. Or you can take a long walk and go to Barns &amp; Noble on 33rd street or Starbucks on St. Paul, both on the other side of the campus. A map of these cafes is shown below.<br /> <br /> <br /> [[File:Coffee.jpg | 900 px]]<br /> <br /> <br /> Do you have other recommendations?<br /> <br /> == See also ==<br /> <br /> * [[Main Page]]<br /> * [[Visitor Parking]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Visitor_Parking&diff=566 2015-10-20T18:57:05Z

<p>Gz323: </p> <hr /> <div>The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (STScI). An easy way to search for the direction on Navigation Systems is to use the address for Space Telescope Science Institute:<br /> <br /> 3701 San Martin Drive, Baltimore, MD 21218<br /> <br /> The visitor parking lot is located on the top surface on east side of San Martin Drive, outside of Muller Deck. Muller Deck is a parking lot reserved for faculty, staff and students. Note the parking garage under Muller Deck is reserved for STScI, and you need to make a detour towards north to get to the surface lots. Follow the instruction on the maps below. <br /> <br /> There are 3 spots reserved for visitors right outside the gate of Muller deck. Please ask Barbara for a permit. If none of the spots is available, you can park in the visitor parking lot and pay at the kiosk. It might be possible to get a temporary hangtag for the day. Please ask your sponsor/contact in the department for more information.<br /> <br /> [[File:Bloomberg Center.jpg | 900 px]]<br /> <br /> [[File:Visitor Parking.jpg | 900 px]]<br /> <br /> == See also ==<br /> <br /> * [[Main Page]]<br /> * [[Coffee]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Coffee&diff=565 2015-10-20T18:56:55Z

<p>Gz323: </p> <hr /> <div>The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (STScI), where you can get coffee at Azafran (in the STScI building). <br /> <br /> On campus, there are several good cafes: Croft Hall, Gilman Hall, Brody Learning Commons, Levering Hall. Or you can take a long walk and go to Barns &amp; Noble on 33rd street or Starbucks on St. Paul, both on the other side of the campus. A map of these cafes is shown below.<br /> <br /> <br /> [[File:Coffee.jpg | 900 px]]<br /> <br /> <br /> Do you have other recommendations?<br /> <br /> == See also ==<br /> <br /> * [[Main Page]]<br /> * [[Vistor Parking]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Coffee&diff=564 2015-10-20T18:56:46Z

<p>Gz323: </p> <hr /> <div>The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (STScI), where you can get coffee at Azafran (in the STScI building). <br /> <br /> On campus, there are several good cafes: Croft Hall, Gilman Hall, Brody Learning Commons, Levering Hall. Or you can take a long walk and go to Barns &amp; Noble on 33rd street or Starbucks on St. Paul, both on the other side of the campus. A map of these cafes is shown below.<br /> <br /> <br /> [[File:Coffee.jpg | 900 px]]<br /> <br /> <br /> Do you have other recommendations?<br /> <br /> == See also ==<br /> <br /> * [[Main Page]]<br /> * [[Vistor Parking]]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Visitor_Parking&diff=563 2015-10-20T18:56:24Z

<p>Gz323: </p> <hr /> <div>The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (STScI). An easy way to search for the direction on Navigation Systems is to use the address for Space Telescope Science Institute:<br /> <br /> 3701 San Martin Drive, Baltimore, MD 21218<br /> <br /> The visitor parking lot is located on the top surface on east side of San Martin Drive, outside of Muller Deck. Muller Deck is a parking lot reserved for faculty, staff and students. Note the parking garage under Muller Deck is reserved for STScI, and you need to make a detour towards north to get to the surface lots. Follow the instruction on the maps below. <br /> <br /> There are 3 spots reserved for visitors right outside the gate of Muller deck. Please ask Barbara for a permit. If none of the spots is available, you can park in the visitor parking lot and pay at the kiosk. It might be possible to get a temporary hangtag for the day. Please ask your sponsor/contact in the department for more information.<br /> <br /> [[File:Bloomberg Center.jpg | 900 px]]<br /> <br /> [[File:Visitor Parking.jpg | 900 px]]<br /> <br /> == See also ==<br /> <br /> * [[Main Page]]<br /> * [[Coffee]]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Coffee&diff=562 2015-10-20T18:54:34Z

<p>Gz323: </p> <hr /> <div>The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (STScI), where you can get coffee at Azafran (in the STScI building). <br /> <br /> On campus, there are several good cafes: Croft Hall, Gilman Hall, Brody Learning Commons, Levering Hall. Or you can take a long walk and go to Barns &amp; Noble on 33rd street or Starbucks on St. Paul, both on the other side of the campus. A map of these cafes is shown below.<br /> <br /> <br /> [[File:Coffee.jpg | 900 px]]<br /> <br /> <br /> Do you have other recommendations?</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Coffee&diff=561 2015-10-20T18:53:35Z

<p>Gz323: Created page with &quot;The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (ST...&quot;</p> <hr /> <div>The Department of Physics and Astronomy is located in the Bloomberg Center on the west side of Homewood Campus, across San Martin Drive from Space Telescope Science Institute (STScI), where you can get coffee at Azafran (in the STScI building). <br /> <br /> On campus, there are several good cafes: Croft Hall, Gilman Hall, Brody Learning Commons, Levering Hall. Or you can take a long walk and go to Barns &amp; Noble on 33rd street or Starbucks on St. Paul, both on the other side of the campus. A map of these cafes is shown below.<br /> <br /> <br /> [[File:Coffee.jpg | 900 px]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=File:Coffee.jpg&diff=560 2015-10-20T18:53:01Z

<p>Gz323: Where to get coffee</p> <hr /> <div>Where to get coffee</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=JHU_CAS_Wiki&diff=559 2015-10-20T18:49:46Z

<p>Gz323: /* Getting Started */</p> <hr /> <div>Welcome to [[JHU CAS Wiki]]!<br /> <br /> * This is a [http://en.wikipedia.org/wiki/Wiki Wiki] for gathering and communicating community information related to working in the [http://sites.krieger.jhu.edu/astronomy/ Center for Astrophysical Sciences], in the [http://physics-astronomy.jhu.edu/ Department of Physics and Astronomy] at [http://jhuu.edu/ Johns Hopkins University]. <br /> <br /> * This wiki is a collaborative effort, so if you see something missing or misspelled or inaccurate or incomplete, please fix it! If you have some experience on some subject, please find a good place or create a page, and put it in!<br /> <br /> * This Wiki is viewable to the public, so please do not post any sensitive or classified information here (nor on Wikipedia - the Wiki for the whole world :-P).<br /> <br /> * The [[Wiki Administration]] page has technical details about the wiki.<br /> <br /> <br /> <br /> == CAS on the Web ==<br /> * The CAS page on the Department website, which has more information regarding logistics, is here: http://physics-astronomy.jhu.edu/research/astronomy-and-astrophysics/ .<br /> * The CAS page on the School website, which has more information about research, is here: http://sites.krieger.jhu.edu/astronomy/ .<br /> <br /> == Getting Started ==<br /> <br /> * [[Visitor Parking | How to get here]]<br /> * [[Getting started in the CAS]]<br /> * [[Computers and Resources]]<br /> * Get started using the [[astrophysics data]]<br /> * Where to get [[Coffee]]<br /> <br /> == Our work ==<br /> <br /> * [[People]]<br /> * [[Groups]]<br /> * [[Projects]]<br /> * [[Media]]<br /> * [[Outreach]]<br /> <br /> == Typical Weekly Events ==<br /> <br /> * '''Monday'''<br /> ** [[CAS Coffee|CAS (social) Coffee]], social coffee event in CAS, Monday, 10:30 am, Bloomberg, Fifth floor lounge<br /> ** [[Cosmojo|Cosmology Journal Club]], Monday, 12:30 pm, Bloomberg 511<br /> ** [[CAS Wine and Cheese Seminars]], Monday, 4:00 pm, Bloomberg 462<br /> <br /> * '''Tuesday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Tuesday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[Astro-ph Student Journal Club]], Fill me in<br /> <br /> * '''Wednesday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Wednesday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[STScI Colloquium]], Wednesday, 3:30 pm, Bahcall Auditorium<br /> ** [[STScI Happy Hour]], Wednesday, 5:30 pm (after Colloquium), Azafran<br /> ** [[CAS Postdoc Dinner]], Wednesday, 7:00 pm, good restaurants<br /> <br /> * '''Thursday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Thursday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[Physics and Astronomy Colloquium]], Thursday, 3:00 pm, Bloomberg, Schafler Auditorium<br /> <br /> * '''Friday'''<br /> ** [[STScI Galaxy Journal Club]], Friday, 12:00 pm, Azafran Cafecon<br /> ** [[PandAs Student Happy Hour]], Friday, 5:00 pm, Bloomberg yard<br /> ** [[Maryland Space Grant Observatory Open House]], Friday, 9:00 pm-12:00 am, Bloomberg Observatory<br /> <br /> == Academic Resources ==<br /> * [[Writing | Writing a paper]]<br /> * [[Presentation | Giving a presentation]]<br /> * [[Programming | Writing code]]<br /> * [[Visualization | Making pretty plots and movies]]<br /> <br /> == &quot;Charm City&quot; Baltimore ==<br /> * [[I don't have a car Panic]]<br /> * [[Travel]]<br /> * [[Housing]]<br /> * [[Restaurants]]<br /> * [[Entertainment]]<br /> * [[Sports]]<br /> <br /> == Wiki Help ==<br /> Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.<br /> <br /> * [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]<br /> * [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]<br /> * [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=JHU_CAS_Wiki&diff=558 2015-10-20T18:49:25Z

<p>Gz323: /* Getting Started */</p> <hr /> <div>Welcome to [[JHU CAS Wiki]]!<br /> <br /> * This is a [http://en.wikipedia.org/wiki/Wiki Wiki] for gathering and communicating community information related to working in the [http://sites.krieger.jhu.edu/astronomy/ Center for Astrophysical Sciences], in the [http://physics-astronomy.jhu.edu/ Department of Physics and Astronomy] at [http://jhuu.edu/ Johns Hopkins University]. <br /> <br /> * This wiki is a collaborative effort, so if you see something missing or misspelled or inaccurate or incomplete, please fix it! If you have some experience on some subject, please find a good place or create a page, and put it in!<br /> <br /> * This Wiki is viewable to the public, so please do not post any sensitive or classified information here (nor on Wikipedia - the Wiki for the whole world :-P).<br /> <br /> * The [[Wiki Administration]] page has technical details about the wiki.<br /> <br /> <br /> <br /> == CAS on the Web ==<br /> * The CAS page on the Department website, which has more information regarding logistics, is here: http://physics-astronomy.jhu.edu/research/astronomy-and-astrophysics/ .<br /> * The CAS page on the School website, which has more information about research, is here: http://sites.krieger.jhu.edu/astronomy/ .<br /> <br /> == Getting Started ==<br /> <br /> * [[Visitor Parking | How to get here]]<br /> * [[Getting started in the CAS]]<br /> * [[Computers and Resources]]<br /> * Get started using the [[astrophysics data]]<br /> * Where to get [[coffee]]<br /> <br /> == Our work ==<br /> <br /> * [[People]]<br /> * [[Groups]]<br /> * [[Projects]]<br /> * [[Media]]<br /> * [[Outreach]]<br /> <br /> == Typical Weekly Events ==<br /> <br /> * '''Monday'''<br /> ** [[CAS Coffee|CAS (social) Coffee]], social coffee event in CAS, Monday, 10:30 am, Bloomberg, Fifth floor lounge<br /> ** [[Cosmojo|Cosmology Journal Club]], Monday, 12:30 pm, Bloomberg 511<br /> ** [[CAS Wine and Cheese Seminars]], Monday, 4:00 pm, Bloomberg 462<br /> <br /> * '''Tuesday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Tuesday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[Astro-ph Student Journal Club]], Fill me in<br /> <br /> * '''Wednesday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Wednesday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[STScI Colloquium]], Wednesday, 3:30 pm, Bahcall Auditorium<br /> ** [[STScI Happy Hour]], Wednesday, 5:30 pm (after Colloquium), Azafran<br /> ** [[CAS Postdoc Dinner]], Wednesday, 7:00 pm, good restaurants<br /> <br /> * '''Thursday'''<br /> ** [[Astro-ph Coffee|Daily Astro-ph Coffee]], Thursday, 10:30 am, Bloomberg, Fifth floor lounge/235<br /> ** [[Physics and Astronomy Colloquium]], Thursday, 3:00 pm, Bloomberg, Schafler Auditorium<br /> <br /> * '''Friday'''<br /> ** [[STScI Galaxy Journal Club]], Friday, 12:00 pm, Azafran Cafecon<br /> ** [[PandAs Student Happy Hour]], Friday, 5:00 pm, Bloomberg yard<br /> ** [[Maryland Space Grant Observatory Open House]], Friday, 9:00 pm-12:00 am, Bloomberg Observatory<br /> <br /> == Academic Resources ==<br /> * [[Writing | Writing a paper]]<br /> * [[Presentation | Giving a presentation]]<br /> * [[Programming | Writing code]]<br /> * [[Visualization | Making pretty plots and movies]]<br /> <br /> == &quot;Charm City&quot; Baltimore ==<br /> * [[I don't have a car Panic]]<br /> * [[Travel]]<br /> * [[Housing]]<br /> * [[Restaurants]]<br /> * [[Entertainment]]<br /> * [[Sports]]<br /> <br /> == Wiki Help ==<br /> Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.<br /> <br /> * [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]<br /> * [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]<br /> * [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=537 2015-09-29T13:43:15Z

<p>Gz323: /* Salvatore Cielo */</p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Testing Gravity using Galaxy Redshift Surveys and CMB''' &lt;br&gt;<br /> <br /> The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements from various other surveys to learn more about cosmology and modified gravity. I will end with a discussion on combining these measurements with CMB lensing in order to probe gravity to better precision and earlier time.<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess'''<br /> <br /> The Fermi satellite has recently detected excess gamma ray emission from the central regions of our Galaxy. This may be evidence for dark matter particles, a major component of the standard cosmological model, annihilating to produce high-energy photons. I will show that the observed signal may instead be generated by millisecond pulsars that formed in dense globular clusters in the Galactic halo. Most of these clusters were ultimately disrupted by evaporation and gravitational tides, contributing to a spherical bulge of stars and stellar remnants. The gamma ray amplitude, angular distribution, and spectral signatures of this source may be predicted without free parameters, and are in remarkable agreement with the observations. The gamma rays are then from the fossil remains of dispersed clusters, and constitute the first direct evidence for the former existence of a much larger globular cluster population.<br /> <br /> == Simeon Bird ==<br /> '''Solving the DLA Velocity Width Problem'''<br /> <br /> Matching the kinematics of strong neutral hydrogen absorbers, DLAs, has been a problem for simulations since the late 90's, and it has been suggested represents a problem for structure formation. I will explain how it was solved through a combination of modern galaxy formation models and attention to measurement details.<br /> <br /> = September 28th =<br /> == Paul La Plante ==<br /> '''Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees'''<br /> <br /> Helium reionization is an important epoch in the Universe’s history, and the most recent large-scale transition of the intergalactic medium (IGM). Reionization is driven largely by quasars, and has important implications on the thermal history of the IGM. Due to the biased nature of sources and the large degree of photoheating, numerical simulations are ideally suited to investigating this problem. Recently we have run a new suite of large-scale cosmological simulations that solve N-body, hydrodynamics, and radiative transfer simultaneously in order to study the impact of helium reionization on the IGM. Specifically, we make predictions for the temperature density relation of the IGM and observables related to the Lyman-alpha forest. We show that aspects of reionization such as the timing and duration are visible in the helium II Lyman-alpha forest, and might be detectable in the hydrogen forest as well.<br /> <br /> == Mohammadtaher Safarzadeh ==<br /> '''[http://adsabs.harvard.edu/abs/2015arXiv150900034S What shapes the far-infrared spectral energy distribution of galaxies]'''<br /> <br /> We study the Far-Infrared (FIR) Spectral Energy Distributions(SEDs) of a set of<br /> hydro-dynamically simulated galaxies that are post-processed with dusty-radiative <br /> transfer simulation to account for dust extinction of the UV light and re-emission of the absorbed light<br /> by dust in the FIR. We perform PCA analysis on the SEDs. We find that <br /> the first two PCs can explain 97% of the variance in the FIR SEDs with the first PC<br /> describing the peak of the FIR SED and the second PC describing its width. Both<br /> PCs are well predicted by IR luminosity and dust mass.<br /> Our results suggest that the observed redshift evolution in the effective dust <br /> temperature at fixed IR luminosity is not driven by geometry: the SEDs of z~2-3 ultra-luminous<br /> IR galaxies (ULIRGs) are cooler than those of local ULIRGs not because<br /> the high-redshift galaxies are more extended but rather because they have<br /> higher dust masses at fixed IR luminosity. Finally, <br /> based on our simulations, we introduce a two-parameter set of SED <br /> templates that depend on both IR luminosity and dust mass.<br /> <br /> = October 5th =<br /> == Jorge Barrera ==<br /> ''' [http://adsabs.harvard.edu/abs/2015A%26A...579A..45B Mapping star formation and metallicity in CALIFA merging galaxies]'''<br /> <br /> Tidal induced flows have been thought to be the primary mechanism to enhanced the star formation rate (SFR) in interacting galaxies. Despite the large evidence of the global SFR enhancement in these galaxies, little is known on how is its spatial distribution. Thanks to the CALIFA survey, we are able to study the (specific) SFR and the ionized gas metallicity at different scales in 103 galaxies, covering different stages of interaction - from pairs to remnants. To quantify the impact of the interaction, we compare our results with a sample of 80 non-interacting galaxies (Barrera-Ballesteros et al. 2014 {link2}). Although enhancement of the stellar activity is observed in the central region of interacting objects, at extended regions, the SFR from both samples is similar. We also find similar central metallicities between the interacting and isolated galaxies. Our results suggest that even though central SFR and lower metallicities for interacting galaxies have been attributed to tidally induced inflows, other processes such as stellar feedback can contribute to the metal enrichment in interacting galaxies.<br /> <br /> [http://adsabs.harvard.edu/abs/2014A%26A...568A..70B Additional paper]<br /> <br /> == Salvatore Cielo ==<br /> '''The physics of AGN jets from 3D simulations'''<br /> <br /> Among the diffeent feedback mechanisms that AGN provide to their host galaxies and clusters, relativistic, collimated jets show a very rich physics. The interaction of such jets with the hot gas present in galaxy groups or clusters up to Megaparsec scales may explain several well-observed but complex features such as creations of bow-shocks fronts, complex sound waves structures, fast secondary winds, inflation of X-ray cavities (often seen in multiple pairs).<br /> Another important question concerns whether the jets may couple efficiently to the host (mainly because of the jets' high directionality), thus being energetically relevant for galaxy groups and clusters. We explore this physics by running a series of high-resolution 3D numerical simulations of the jet/hot gas interaction, including also multiple (non-coplanar) jet events. Such simulations offer good insight on the energetics of jet feedback and may capture the observed complex structures, as it is visible from animated flow maps and synthetic x-ray images produced from the simulation output.<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.<br /> <br /> == Johannes Sahlmann ==<br /> '''Exploring the giant planet - brown dwarf connection with astrometry'''<br /> <br /> Modern surveys of isolated brown dwarfs and of extrasolar planets around Sun-like stars reveal a continuous mass distribution across the deuterium-burning mass limit. This challenges the mass criterion sometimes used to distinguish between these objects and calls for methods that can trace the different formation paths instead. Astrometric measurements are a way forward because they yield both the orbital parameters and the planet mass. I will show results from ground- and space-based astrometric surveys that explore the giant planet - brown dwarf connection. These include the systematic determination of true masses for substellar objects found in radial-velocity surveys and the discovery of brown dwarfs orbited by very low-mass substellar objects. Furthermore, I will outline how the Gaia astrometry mission will help to describe the substellar demographics.<br /> <br /> = October 19th =<br /> == Roman Gold ==<br /> Title and abstract coming soon.<br /> <br /> = October 26th =<br /> == Tom Brown ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and Abstract coming soon<br /> <br /> = November 2nd =<br /> == Marc Rafelski ==<br /> On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3<br /> <br /> Abstract coming soon<br /> <br /> == Tony Sohn ==<br /> Title and abstract coming soon.<br /> <br /> <br /> = November 9th =<br /> == Eric Switzer ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = November 16th =<br /> == Fabienne Bastien ==<br /> Title and abstract coming soon.<br /> <br /> == Ai-Lei Sun ==<br /> '''Unveiling the Link between Supermassive Black Holes and Galaxies'''<br /> <br /> Feedback from Active galactic nuclei (AGN) has been proposed as an important quenching mechanism to suppress star formation in massive galaxies. We investigate the most direct form of AGN feedback - galactic outflows, in the most luminous AGN in the nearby universe. Using ALMA and Magellan observations to target molecular and ionized outflows, we find that luminous AGN can impact the dynamics and phase of the galactic medium, and confirm the complex multi-phase and multi-scaled nature of the feedback phenomenon. I end with a new imaging selection technique to find extended ionized outflows and characterize their frequency, size distribution, and luminosity dependence. This technique will open a new window for feedback studies in the era of large-scale optical imaging surveys like HSC and then LSST.<br /> <br /> = November 30th = <br /> == Brian Cherinka ==<br /> Title and abstract coming soon.<br /> <br /> == Mei-Ling Huang ==<br /> Title and abstract coming soon.<br /> <br /> = December 7th =<br /> == Eve Ostriker ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = December 14th =<br /> == Henry Ferguson ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=536 2015-09-29T13:43:00Z

<p>Gz323: /* Salvatore Cielo */</p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Testing Gravity using Galaxy Redshift Surveys and CMB''' &lt;br&gt;<br /> <br /> The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements from various other surveys to learn more about cosmology and modified gravity. I will end with a discussion on combining these measurements with CMB lensing in order to probe gravity to better precision and earlier time.<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess'''<br /> <br /> The Fermi satellite has recently detected excess gamma ray emission from the central regions of our Galaxy. This may be evidence for dark matter particles, a major component of the standard cosmological model, annihilating to produce high-energy photons. I will show that the observed signal may instead be generated by millisecond pulsars that formed in dense globular clusters in the Galactic halo. Most of these clusters were ultimately disrupted by evaporation and gravitational tides, contributing to a spherical bulge of stars and stellar remnants. The gamma ray amplitude, angular distribution, and spectral signatures of this source may be predicted without free parameters, and are in remarkable agreement with the observations. The gamma rays are then from the fossil remains of dispersed clusters, and constitute the first direct evidence for the former existence of a much larger globular cluster population.<br /> <br /> == Simeon Bird ==<br /> '''Solving the DLA Velocity Width Problem'''<br /> <br /> Matching the kinematics of strong neutral hydrogen absorbers, DLAs, has been a problem for simulations since the late 90's, and it has been suggested represents a problem for structure formation. I will explain how it was solved through a combination of modern galaxy formation models and attention to measurement details.<br /> <br /> = September 28th =<br /> == Paul La Plante ==<br /> '''Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees'''<br /> <br /> Helium reionization is an important epoch in the Universe’s history, and the most recent large-scale transition of the intergalactic medium (IGM). Reionization is driven largely by quasars, and has important implications on the thermal history of the IGM. Due to the biased nature of sources and the large degree of photoheating, numerical simulations are ideally suited to investigating this problem. Recently we have run a new suite of large-scale cosmological simulations that solve N-body, hydrodynamics, and radiative transfer simultaneously in order to study the impact of helium reionization on the IGM. Specifically, we make predictions for the temperature density relation of the IGM and observables related to the Lyman-alpha forest. We show that aspects of reionization such as the timing and duration are visible in the helium II Lyman-alpha forest, and might be detectable in the hydrogen forest as well.<br /> <br /> == Mohammadtaher Safarzadeh ==<br /> '''[http://adsabs.harvard.edu/abs/2015arXiv150900034S What shapes the far-infrared spectral energy distribution of galaxies]'''<br /> <br /> We study the Far-Infrared (FIR) Spectral Energy Distributions(SEDs) of a set of<br /> hydro-dynamically simulated galaxies that are post-processed with dusty-radiative <br /> transfer simulation to account for dust extinction of the UV light and re-emission of the absorbed light<br /> by dust in the FIR. We perform PCA analysis on the SEDs. We find that <br /> the first two PCs can explain 97% of the variance in the FIR SEDs with the first PC<br /> describing the peak of the FIR SED and the second PC describing its width. Both<br /> PCs are well predicted by IR luminosity and dust mass.<br /> Our results suggest that the observed redshift evolution in the effective dust <br /> temperature at fixed IR luminosity is not driven by geometry: the SEDs of z~2-3 ultra-luminous<br /> IR galaxies (ULIRGs) are cooler than those of local ULIRGs not because<br /> the high-redshift galaxies are more extended but rather because they have<br /> higher dust masses at fixed IR luminosity. Finally, <br /> based on our simulations, we introduce a two-parameter set of SED <br /> templates that depend on both IR luminosity and dust mass.<br /> <br /> = October 5th =<br /> == Jorge Barrera ==<br /> ''' [http://adsabs.harvard.edu/abs/2015A%26A...579A..45B Mapping star formation and metallicity in CALIFA merging galaxies]'''<br /> <br /> Tidal induced flows have been thought to be the primary mechanism to enhanced the star formation rate (SFR) in interacting galaxies. Despite the large evidence of the global SFR enhancement in these galaxies, little is known on how is its spatial distribution. Thanks to the CALIFA survey, we are able to study the (specific) SFR and the ionized gas metallicity at different scales in 103 galaxies, covering different stages of interaction - from pairs to remnants. To quantify the impact of the interaction, we compare our results with a sample of 80 non-interacting galaxies (Barrera-Ballesteros et al. 2014 {link2}). Although enhancement of the stellar activity is observed in the central region of interacting objects, at extended regions, the SFR from both samples is similar. We also find similar central metallicities between the interacting and isolated galaxies. Our results suggest that even though central SFR and lower metallicities for interacting galaxies have been attributed to tidally induced inflows, other processes such as stellar feedback can contribute to the metal enrichment in interacting galaxies.<br /> <br /> [http://adsabs.harvard.edu/abs/2014A%26A...568A..70B Additional paper]<br /> <br /> == Salvatore Cielo ==<br /> The physics of AGN jets from 3D simulations<br /> <br /> Among the diffeent feedback mechanisms that AGN provide to their host galaxies and clusters, relativistic, collimated jets show a very rich physics. The interaction of such jets with the hot gas present in galaxy groups or clusters up to Megaparsec scales may explain several well-observed but complex features such as creations of bow-shocks fronts, complex sound waves structures, fast secondary winds, inflation of X-ray cavities (often seen in multiple pairs).<br /> Another important question concerns whether the jets may couple efficiently to the host (mainly because of the jets' high directionality), thus being energetically relevant for galaxy groups and clusters. We explore this physics by running a series of high-resolution 3D numerical simulations of the jet/hot gas interaction, including also multiple (non-coplanar) jet events. Such simulations offer good insight on the energetics of jet feedback and may capture the observed complex structures, as it is visible from animated flow maps and synthetic x-ray images produced from the simulation output.<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.<br /> <br /> == Johannes Sahlmann ==<br /> '''Exploring the giant planet - brown dwarf connection with astrometry'''<br /> <br /> Modern surveys of isolated brown dwarfs and of extrasolar planets around Sun-like stars reveal a continuous mass distribution across the deuterium-burning mass limit. This challenges the mass criterion sometimes used to distinguish between these objects and calls for methods that can trace the different formation paths instead. Astrometric measurements are a way forward because they yield both the orbital parameters and the planet mass. I will show results from ground- and space-based astrometric surveys that explore the giant planet - brown dwarf connection. These include the systematic determination of true masses for substellar objects found in radial-velocity surveys and the discovery of brown dwarfs orbited by very low-mass substellar objects. Furthermore, I will outline how the Gaia astrometry mission will help to describe the substellar demographics.<br /> <br /> = October 19th =<br /> == Roman Gold ==<br /> Title and abstract coming soon.<br /> <br /> = October 26th =<br /> == Tom Brown ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and Abstract coming soon<br /> <br /> = November 2nd =<br /> == Marc Rafelski ==<br /> On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3<br /> <br /> Abstract coming soon<br /> <br /> == Tony Sohn ==<br /> Title and abstract coming soon.<br /> <br /> <br /> = November 9th =<br /> == Eric Switzer ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = November 16th =<br /> == Fabienne Bastien ==<br /> Title and abstract coming soon.<br /> <br /> == Ai-Lei Sun ==<br /> '''Unveiling the Link between Supermassive Black Holes and Galaxies'''<br /> <br /> Feedback from Active galactic nuclei (AGN) has been proposed as an important quenching mechanism to suppress star formation in massive galaxies. We investigate the most direct form of AGN feedback - galactic outflows, in the most luminous AGN in the nearby universe. Using ALMA and Magellan observations to target molecular and ionized outflows, we find that luminous AGN can impact the dynamics and phase of the galactic medium, and confirm the complex multi-phase and multi-scaled nature of the feedback phenomenon. I end with a new imaging selection technique to find extended ionized outflows and characterize their frequency, size distribution, and luminosity dependence. This technique will open a new window for feedback studies in the era of large-scale optical imaging surveys like HSC and then LSST.<br /> <br /> = November 30th = <br /> == Brian Cherinka ==<br /> Title and abstract coming soon.<br /> <br /> == Mei-Ling Huang ==<br /> Title and abstract coming soon.<br /> <br /> = December 7th =<br /> == Eve Ostriker ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = December 14th =<br /> == Henry Ferguson ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=535 2015-09-29T13:42:28Z

<p>Gz323: </p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Solving the DLA Velocity Width Problem]]<br /> |-<br /> |Sep 28 || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees]]<br /> |-<br /> | || Mohammadtaher Safarzadeh (JHU) || [[Wine and Cheese Fall 2015#Mohammadtaher Safarzadeh|What shapes the far-infrared spectral energy distribution of galaxies]]<br /> |-<br /> |Oct 05 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Mapping star formation and metallicity in CALIFA merging galaxies]]<br /> |-<br /> | || Salvatore Cielo (IAP) || [[Wine and Cheese Fall 2015#Salvatore Cielo|The physics of AGN jets from 3D simulations]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Johannes Sahlmann|Exploring the giant planet - brown dwarf connection with astrometry<br /> ]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the Non-evolution of the Star Formation Rate Efficiency of HI Rich Galaxies from z~1-3]]<br /> |-<br /> &lt;!-- | || Tony Sohn (JHU) || [[Wine and Cheese Fall 2015#Tony Sohn|Schedule conflict]] --&gt;<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eric Switzer|Coming Soon]]<br /> |-<br /> |Nov 16 || Fabienne Bastien (PSU) || [[Wine and Cheese Fall 2015#Fabienne Bastien|Coming Soon]]<br /> |-<br /> | || Ai-Lei Sun (Princeton) || [[Wine and Cheese Fall 2015#Ai-Lei Sun|Unveiling the link between Supermassive Black Holes and Galaxies]]<br /> |-<br /> |Nov 30 || Mei-Ling Huang (JHU) || [[Wine and Cheese Fall 2015#Mei-Ling Huang|Coming Soon]]<br /> |-<br /> | || Brian Cherinka (JHU) || [[Wine and Cheese Fall 2015#Brian Cherinka|Coming Soon]]<br /> |-<br /> | Dec 07 || Eve Ostriker (Princeton), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eve Ostriker|Coming Soon]]<br /> |-<br /> | Dec 14 || Henry Ferguson (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Coming Soon]]<br /> |-<br /> <br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=534 2015-09-26T16:27:03Z

<p>Gz323: </p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Testing Gravity using Galaxy Redshift Surveys and CMB''' &lt;br&gt;<br /> <br /> The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements from various other surveys to learn more about cosmology and modified gravity. I will end with a discussion on combining these measurements with CMB lensing in order to probe gravity to better precision and earlier time.<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess'''<br /> <br /> The Fermi satellite has recently detected excess gamma ray emission from the central regions of our Galaxy. This may be evidence for dark matter particles, a major component of the standard cosmological model, annihilating to produce high-energy photons. I will show that the observed signal may instead be generated by millisecond pulsars that formed in dense globular clusters in the Galactic halo. Most of these clusters were ultimately disrupted by evaporation and gravitational tides, contributing to a spherical bulge of stars and stellar remnants. The gamma ray amplitude, angular distribution, and spectral signatures of this source may be predicted without free parameters, and are in remarkable agreement with the observations. The gamma rays are then from the fossil remains of dispersed clusters, and constitute the first direct evidence for the former existence of a much larger globular cluster population.<br /> <br /> == Simeon Bird ==<br /> '''Solving the DLA Velocity Width Problem'''<br /> <br /> Matching the kinematics of strong neutral hydrogen absorbers, DLAs, has been a problem for simulations since the late 90's, and it has been suggested represents a problem for structure formation. I will explain how it was solved through a combination of modern galaxy formation models and attention to measurement details.<br /> <br /> = September 28th =<br /> == Paul La Plante ==<br /> '''Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees'''<br /> <br /> Helium reionization is an important epoch in the Universe’s history, and the most recent large-scale transition of the intergalactic medium (IGM). Reionization is driven largely by quasars, and has important implications on the thermal history of the IGM. Due to the biased nature of sources and the large degree of photoheating, numerical simulations are ideally suited to investigating this problem. Recently we have run a new suite of large-scale cosmological simulations that solve N-body, hydrodynamics, and radiative transfer simultaneously in order to study the impact of helium reionization on the IGM. Specifically, we make predictions for the temperature density relation of the IGM and observables related to the Lyman-alpha forest. We show that aspects of reionization such as the timing and duration are visible in the helium II Lyman-alpha forest, and might be detectable in the hydrogen forest as well.<br /> <br /> == Mohammadtaher Safarzadeh ==<br /> '''[http://adsabs.harvard.edu/abs/2015arXiv150900034S What shapes the far-infrared spectral energy distribution of galaxies]'''<br /> <br /> We study the Far-Infrared (FIR) Spectral Energy Distributions(SEDs) of a set of<br /> hydro-dynamically simulated galaxies that are post-processed with dusty-radiative <br /> transfer simulation to account for dust extinction of the UV light and re-emission of the absorbed light<br /> by dust in the FIR. We perform PCA analysis on the SEDs. We find that <br /> the first two PCs can explain 97% of the variance in the FIR SEDs with the first PC<br /> describing the peak of the FIR SED and the second PC describing its width. Both<br /> PCs are well predicted by IR luminosity and dust mass.<br /> Our results suggest that the observed redshift evolution in the effective dust <br /> temperature at fixed IR luminosity is not driven by geometry: the SEDs of z~2-3 ultra-luminous<br /> IR galaxies (ULIRGs) are cooler than those of local ULIRGs not because<br /> the high-redshift galaxies are more extended but rather because they have<br /> higher dust masses at fixed IR luminosity. Finally, <br /> based on our simulations, we introduce a two-parameter set of SED <br /> templates that depend on both IR luminosity and dust mass.<br /> <br /> = October 5th =<br /> == Jorge Barrera ==<br /> ''' [http://adsabs.harvard.edu/abs/2015A%26A...579A..45B Mapping star formation and metallicity in CALIFA merging galaxies]'''<br /> <br /> Tidal induced flows have been thought to be the primary mechanism to enhanced the star formation rate (SFR) in interacting galaxies. Despite the large evidence of the global SFR enhancement in these galaxies, little is known on how is its spatial distribution. Thanks to the CALIFA survey, we are able to study the (specific) SFR and the ionized gas metallicity at different scales in 103 galaxies, covering different stages of interaction - from pairs to remnants. To quantify the impact of the interaction, we compare our results with a sample of 80 non-interacting galaxies (Barrera-Ballesteros et al. 2014 {link2}). Although enhancement of the stellar activity is observed in the central region of interacting objects, at extended regions, the SFR from both samples is similar. We also find similar central metallicities between the interacting and isolated galaxies. Our results suggest that even though central SFR and lower metallicities for interacting galaxies have been attributed to tidally induced inflows, other processes such as stellar feedback can contribute to the metal enrichment in interacting galaxies.<br /> <br /> [http://adsabs.harvard.edu/abs/2014A%26A...568A..70B Additional paper]<br /> <br /> == Salvatore Cielo ==<br /> Title and abstract coming soon.<br /> <br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.<br /> <br /> == Johannes Sahlmann ==<br /> '''Exploring the giant planet - brown dwarf connection with astrometry'''<br /> <br /> Modern surveys of isolated brown dwarfs and of extrasolar planets around Sun-like stars reveal a continuous mass distribution across the deuterium-burning mass limit. This challenges the mass criterion sometimes used to distinguish between these objects and calls for methods that can trace the different formation paths instead. Astrometric measurements are a way forward because they yield both the orbital parameters and the planet mass. I will show results from ground- and space-based astrometric surveys that explore the giant planet - brown dwarf connection. These include the systematic determination of true masses for substellar objects found in radial-velocity surveys and the discovery of brown dwarfs orbited by very low-mass substellar objects. Furthermore, I will outline how the Gaia astrometry mission will help to describe the substellar demographics.<br /> <br /> = October 19th =<br /> == Roman Gold ==<br /> Title and abstract coming soon.<br /> <br /> = October 26th =<br /> == Tom Brown ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and Abstract coming soon<br /> <br /> = November 2nd =<br /> == Marc Rafelski ==<br /> On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3<br /> <br /> Abstract coming soon<br /> <br /> == Tony Sohn ==<br /> Title and abstract coming soon.<br /> <br /> <br /> = November 9th =<br /> == Eric Switzer ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = November 16th =<br /> == Fabienne Bastien ==<br /> Title and abstract coming soon.<br /> <br /> == Ai-Lei Sun ==<br /> '''Unveiling the Link between Supermassive Black Holes and Galaxies'''<br /> <br /> Feedback from Active galactic nuclei (AGN) has been proposed as an important quenching mechanism to suppress star formation in massive galaxies. We investigate the most direct form of AGN feedback - galactic outflows, in the most luminous AGN in the nearby universe. Using ALMA and Magellan observations to target molecular and ionized outflows, we find that luminous AGN can impact the dynamics and phase of the galactic medium, and confirm the complex multi-phase and multi-scaled nature of the feedback phenomenon. I end with a new imaging selection technique to find extended ionized outflows and characterize their frequency, size distribution, and luminosity dependence. This technique will open a new window for feedback studies in the era of large-scale optical imaging surveys like HSC and then LSST.<br /> <br /> = November 30th = <br /> == Brian Cherinka ==<br /> Title and abstract coming soon.<br /> <br /> == Mei-Ling Huang ==<br /> Title and abstract coming soon.<br /> <br /> = December 7th =<br /> == Eve Ostriker ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = December 14th =<br /> == Henry Ferguson ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=533 2015-09-26T16:25:33Z

<p>Gz323: </p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Testing Gravity using Galaxy Redshift Surveys and CMB''' &lt;br&gt;<br /> <br /> The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements from various other surveys to learn more about cosmology and modified gravity. I will end with a discussion on combining these measurements with CMB lensing in order to probe gravity to better precision and earlier time.<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess'''<br /> <br /> The Fermi satellite has recently detected excess gamma ray emission from the central regions of our Galaxy. This may be evidence for dark matter particles, a major component of the standard cosmological model, annihilating to produce high-energy photons. I will show that the observed signal may instead be generated by millisecond pulsars that formed in dense globular clusters in the Galactic halo. Most of these clusters were ultimately disrupted by evaporation and gravitational tides, contributing to a spherical bulge of stars and stellar remnants. The gamma ray amplitude, angular distribution, and spectral signatures of this source may be predicted without free parameters, and are in remarkable agreement with the observations. The gamma rays are then from the fossil remains of dispersed clusters, and constitute the first direct evidence for the former existence of a much larger globular cluster population.<br /> <br /> == Simeon Bird ==<br /> '''Solving the DLA Velocity Width Problem'''<br /> <br /> Matching the kinematics of strong neutral hydrogen absorbers, DLAs, has been a problem for simulations since the late 90's, and it has been suggested represents a problem for structure formation. I will explain how it was solved through a combination of modern galaxy formation models and attention to measurement details.<br /> <br /> = September 28th =<br /> == Paul La Plante ==<br /> '''Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees'''<br /> <br /> Helium reionization is an important epoch in the Universe’s history, and the most recent large-scale transition of the intergalactic medium (IGM). Reionization is driven largely by quasars, and has important implications on the thermal history of the IGM. Due to the biased nature of sources and the large degree of photoheating, numerical simulations are ideally suited to investigating this problem. Recently we have run a new suite of large-scale cosmological simulations that solve N-body, hydrodynamics, and radiative transfer simultaneously in order to study the impact of helium reionization on the IGM. Specifically, we make predictions for the temperature density relation of the IGM and observables related to the Lyman-alpha forest. We show that aspects of reionization such as the timing and duration are visible in the helium II Lyman-alpha forest, and might be detectable in the hydrogen forest as well.<br /> <br /> == Mohammadtaher Safarzadeh ==<br /> '''[http://adsabs.harvard.edu/abs/2015arXiv150900034S What shapes the far-infrared spectral energy distribution of galaxies]'''<br /> <br /> We study the Far-Infrared (FIR) Spectral Energy Distributions(SEDs) of a set of<br /> hydro-dynamically simulated galaxies that are post-processed with dusty-radiative <br /> transfer simulation to account for dust extinction of the UV light and re-emission of the absorbed light<br /> by dust in the FIR. We perform PCA analysis on the SEDs. We find that <br /> the first two PCs can explain 97% of the variance in the FIR SEDs with the first PC<br /> describing the peak of the FIR SED and the second PC describing its width. Both<br /> PCs are well predicted by IR luminosity and dust mass.<br /> Our results suggest that the observed redshift evolution in the effective dust <br /> temperature at fixed IR luminosity is not driven by geometry: the SEDs of z~2-3 ultra-luminous<br /> IR galaxies (ULIRGs) are cooler than those of local ULIRGs not because<br /> the high-redshift galaxies are more extended but rather because they have<br /> higher dust masses at fixed IR luminosity. Finally, <br /> based on our simulations, we introduce a two-parameter set of SED <br /> templates that depend on both IR luminosity and dust mass.<br /> <br /> = October 5th =<br /> == Jorge Barrera ==<br /> ''' [http://adsabs.harvard.edu/abs/2015A%26A...579A..45B Mapping star formation and metallicity in CALIFA merging galaxies]'''<br /> <br /> Tidal induced flows have been thought to be the primary mechanism to enhanced the star formation rate (SFR) in interacting galaxies. Despite the large evidence of the global SFR enhancement in these galaxies, little is known on how is its spatial distribution. Thanks to the CALIFA survey, we are able to study the (specific) SFR and the ionized gas metallicity at different scales in 103 galaxies, covering different stages of interaction - from pairs to remnants. To quantify the impact of the interaction, we compare our results with a sample of 80 non-interacting galaxies (Barrera-Ballesteros et al. 2014 {link2}). Although enhancement of the stellar activity is observed in the central region of interacting objects, at extended regions, the SFR from both samples is similar. We also find similar central metallicities between the interacting and isolated galaxies. Our results suggest that even though central SFR and lower metallicities for interacting galaxies have been attributed to tidally induced inflows, other processes such as stellar feedback can contribute to the metal enrichment in interacting galaxies.<br /> <br /> [http://adsabs.harvard.edu/abs/2014A%26A...568A..70B Additional paper]<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.<br /> <br /> == Johannes Sahlmann ==<br /> '''Exploring the giant planet - brown dwarf connection with astrometry'''<br /> <br /> Modern surveys of isolated brown dwarfs and of extrasolar planets around Sun-like stars reveal a continuous mass distribution across the deuterium-burning mass limit. This challenges the mass criterion sometimes used to distinguish between these objects and calls for methods that can trace the different formation paths instead. Astrometric measurements are a way forward because they yield both the orbital parameters and the planet mass. I will show results from ground- and space-based astrometric surveys that explore the giant planet - brown dwarf connection. These include the systematic determination of true masses for substellar objects found in radial-velocity surveys and the discovery of brown dwarfs orbited by very low-mass substellar objects. Furthermore, I will outline how the Gaia astrometry mission will help to describe the substellar demographics.<br /> <br /> = October 19th =<br /> == Roman Gold ==<br /> Title and abstract coming soon.<br /> <br /> = October 26th =<br /> == Tom Brown ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and Abstract coming soon<br /> <br /> = November 2nd =<br /> == Marc Rafelski ==<br /> On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3<br /> <br /> Abstract coming soon<br /> <br /> == Tony Sohn ==<br /> Title and abstract coming soon.<br /> <br /> <br /> = November 9th =<br /> == Eric Switzer ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = November 16th =<br /> == Fabienne Bastien ==<br /> Title and abstract coming soon.<br /> <br /> == Ai-Lei Sun ==<br /> '''Unveiling the Link between Supermassive Black Holes and Galaxies'''<br /> <br /> Feedback from Active galactic nuclei (AGN) has been proposed as an important quenching mechanism to suppress star formation in massive galaxies. We investigate the most direct form of AGN feedback - galactic outflows, in the most luminous AGN in the nearby universe. Using ALMA and Magellan observations to target molecular and ionized outflows, we find that luminous AGN can impact the dynamics and phase of the galactic medium, and confirm the complex multi-phase and multi-scaled nature of the feedback phenomenon. I end with a new imaging selection technique to find extended ionized outflows and characterize their frequency, size distribution, and luminosity dependence. This technique will open a new window for feedback studies in the era of large-scale optical imaging surveys like HSC and then LSST.<br /> <br /> = November 30th = <br /> == Mei-Ling Huang ==<br /> Title and abstract coming soon.<br /> <br /> = December 7th =<br /> == Eve Ostriker ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = December 14th =<br /> == Henry Ferguson ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=532 2015-09-26T16:24:13Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Solving the DLA Velocity Width Problem]]<br /> |-<br /> |Sep 28 || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees]]<br /> |-<br /> | || Mohammadtaher Safarzadeh (JHU) || [[Wine and Cheese Fall 2015#Mohammadtaher Safarzadeh|What shapes the far-infrared spectral energy distribution of galaxies]]<br /> |-<br /> |Oct 05 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Mapping star formation and metallicity in CALIFA merging galaxies]]<br /> |-<br /> | || Salvatore Cielo (IAP) || [[Wine and Cheese Fall 2015#Salvatore Cielo|Coming Soon]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Johannes Sahlmann|Exploring the giant planet - brown dwarf connection with astrometry<br /> ]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the Non-evolution of the Star Formation Rate Efficiency of HI Rich Galaxies from z~1-3]]<br /> |-<br /> &lt;!-- | || Tony Sohn (JHU) || [[Wine and Cheese Fall 2015#Tony Sohn|Schedule conflict]] --&gt;<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eric Switzer|Coming Soon]]<br /> |-<br /> |Nov 16 || Fabienne Bastien (PSU) || [[Wine and Cheese Fall 2015#Fabienne Bastien|Coming Soon]]<br /> |-<br /> | || Ai-Lei Sun (Princeton) || [[Wine and Cheese Fall 2015#Ai-Lei Sun|Unveiling the link between Supermassive Black Holes and Galaxies]]<br /> |-<br /> |Nov 30 || Mei-Ling Huang (JHU) || [[Wine and Cheese Fall 2015#Mei-Ling Huang|Coming Soon]]<br /> |-<br /> | || Brian Cherinka (JHU) || [[Wine and Cheese Fall 2015#Brian Cherinka|Coming Soon]]<br /> |-<br /> | Dec 07 || Eve Ostriker (Princeton), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eve Ostriker|Coming Soon]]<br /> |-<br /> | Dec 14 || Henry Ferguson (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Coming Soon]]<br /> |-<br /> <br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=531 2015-09-25T21:41:19Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Solving the DLA Velocity Width Problem]]<br /> |-<br /> |Sep 28 || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees]]<br /> |-<br /> | || Mohammadtaher Safarzadeh (JHU) || [[Wine and Cheese Fall 2015#Mohammadtaher Safarzadeh|What shapes the far-infrared spectral energy distribution of galaxies]]<br /> |-<br /> |Oct 05 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Mapping star formation and metallicity in CALIFA merging galaxies]]<br /> |-<br /> | || Salvatore Cielo (IAP) || [[Wine and Cheese Fall 2015#Salvatore Cielo|Coming Soon]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Johannes Sahlmann|Exploring the giant planet - brown dwarf connection with astrometry<br /> ]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> &lt;!-- | || Tony Sohn (JHU) || [[Wine and Cheese Fall 2015#Tony Sohn|Schedule conflict]] --&gt;<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eric Switzer|Coming Soon]]<br /> |-<br /> |Nov 16 || Fabienne Bastien (PSU) || [[Wine and Cheese Fall 2015#Fabienne Bastien|Coming Soon]]<br /> |-<br /> | || Ai-Lei Sun (Princeton) || [[Wine and Cheese Fall 2015#Ai-Lei Sun|Coming Soon]]<br /> |-<br /> |Nov 30 || Mei-Ling Huang (JHU) || [[Wine and Cheese Fall 2015#Mei-Ling Huang|Coming Soon]]<br /> |-<br /> | || Brian Cherinka (JHU) || [[Wine and Cheese Fall 2015#Brian Cherinka|Coming Soon]]<br /> |-<br /> | Dec 07 || Eve Ostriker (Princeton), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eve Ostriker|Coming Soon]]<br /> |-<br /> | Dec 14 || Henry Ferguson (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Coming Soon]]<br /> |-<br /> <br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=529 2015-09-24T19:08:32Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Solving the DLA Velocity Width Problem]]<br /> |-<br /> |Sep 28 || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees]]<br /> |-<br /> | || Mohammadtaher Safarzadeh (JHU) || [[Wine and Cheese Fall 2015#Mohammadtaher Safarzadeh|What shapes the far-infrared spectral energy distribution of galaxies]]<br /> |-<br /> |Oct 05 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Mapping star formation and metallicity in CALIFA merging galaxies]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Johannes Sahlmann|Exploring the giant planet - brown dwarf connection with astrometry<br /> ]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Tony Sohn (JHU) || [[Wine and Cheese Fall 2015#Tony Sohn|Coming Soon]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eric Switzer|Coming Soon]]<br /> |-<br /> |Nov 16 || Fabienne Bastien (PSU) || [[Wine and Cheese Fall 2015#Fabienne Bastien|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Mei-Ling Huang (JHU) || [[Wine and Cheese Fall 2015#Mei-Ling Huang|Coming Soon]]<br /> |-<br /> | || Brian Cherinka || [[Wine and Cheese Fall 2015#Brian Cherinka|Coming Soon]]<br /> |-<br /> | Dec 07 || Eve Ostriker (Princeton), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eve Ostriker|Coming Soon]]<br /> |-<br /> | Dec 14 || Henry Ferguson (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Coming Soon]]<br /> |-<br /> <br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=525 2015-09-22T04:33:29Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Solving the DLA Velocity Width Problem]]<br /> |-<br /> |Sep 28 || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees]]<br /> |-<br /> | || Mohammadtaher Safarzadeh (JHU) || [[Wine and Cheese Fall 2015#Mohammadtaher Safarzadeh|What shapes the far-infrared spectral energy distribution of galaxies]]<br /> |-<br /> |Oct 05 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Mapping star formation and metallicity in CALIFA merging galaxies]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Johannes Sahlmann|Coming Soon]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Tony Sohn (JHU) || [[Wine and Cheese Fall 2015#Tony Sohn|Coming Soon]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eric Switzer|Coming Soon]]<br /> |-<br /> |Nov 16 || Fabienne Bastien (PSU) || [[Wine and Cheese Fall 2015#Fabienne Bastien|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Mei-Ling Huang (JHU) || [[Wine and Cheese Fall 2015#Mei-Ling Huang|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Eve Ostriker (Princeton), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eve Ostriker|Coming Soon]]<br /> |-<br /> | Dec 14 || Henry Ferguson (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Coming Soon]]<br /> |-<br /> <br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=522 2015-09-21T14:45:57Z

<p>Gz323: </p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Testing Gravity using Galaxy Redshift Surveys and CMB''' &lt;br&gt;<br /> <br /> The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements from various other surveys to learn more about cosmology and modified gravity. I will end with a discussion on combining these measurements with CMB lensing in order to probe gravity to better precision and earlier time.<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess'''<br /> <br /> The Fermi satellite has recently detected excess gamma ray emission from the central regions of our Galaxy. This may be evidence for dark matter particles, a major component of the standard cosmological model, annihilating to produce high-energy photons. I will show that the observed signal may instead be generated by millisecond pulsars that formed in dense globular clusters in the Galactic halo. Most of these clusters were ultimately disrupted by evaporation and gravitational tides, contributing to a spherical bulge of stars and stellar remnants. The gamma ray amplitude, angular distribution, and spectral signatures of this source may be predicted without free parameters, and are in remarkable agreement with the observations. The gamma rays are then from the fossil remains of dispersed clusters, and constitute the first direct evidence for the former existence of a much larger globular cluster population.<br /> <br /> == Simeon Bird ==<br /> '''Solving the DLA Velocity Width Problem'''<br /> <br /> Matching the kinematics of strong neutral hydrogen absorbers, DLAs, has been a problem for simulations since the late 90's, and it has been suggested represents a problem for structure formation. I will explain how it was solved through a combination of modern galaxy formation models and attention to measurement details.<br /> <br /> = September 28th =<br /> == Paul La Plante ==<br /> '''Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees'''<br /> <br /> Helium reionization is an important epoch in the Universe’s history, and the most recent large-scale transition of the intergalactic medium (IGM). Reionization is driven largely by quasars, and has important implications on the thermal history of the IGM. Due to the biased nature of sources and the large degree of photoheating, numerical simulations are ideally suited to investigating this problem. Recently we have run a new suite of large-scale cosmological simulations that solve N-body, hydrodynamics, and radiative transfer simultaneously in order to study the impact of helium reionization on the IGM. Specifically, we make predictions for the temperature density relation of the IGM and observables related to the Lyman-alpha forest. We show that aspects of reionization such as the timing and duration are visible in the helium II Lyman-alpha forest, and might be detectable in the hydrogen forest as well.<br /> <br /> == Mohammadtaher Safarzadeh ==<br /> Title and abstract coming soon.<br /> <br /> <br /> = October 5th =<br /> == Jorge Barrera ==<br /> ''' [http://adsabs.harvard.edu/abs/2015A%26A...579A..45B Mapping star formation and metallicity in CALIFA merging galaxies]'''<br /> <br /> Tidal induced flows have been thought to be the primary mechanism to enhanced the star formation rate (SFR) in interacting galaxies. Despite the large evidence of the global SFR enhancement in these galaxies, little is known on how is its spatial distribution. Thanks to the CALIFA survey, we are able to study the (specific) SFR and the ionized gas metallicity at different scales in 103 galaxies, covering different stages of interaction - from pairs to remnants. To quantify the impact of the interaction, we compare our results with a sample of 80 non-interacting galaxies (Barrera-Ballesteros et al. 2014 {link2}). Although enhancement of the stellar activity is observed in the central region of interacting objects, at extended regions, the SFR from both samples is similar. We also find similar central metallicities between the interacting and isolated galaxies. Our results suggest that even though central SFR and lower metallicities for interacting galaxies have been attributed to tidally induced inflows, other processes such as stellar feedback can contribute to the metal enrichment in interacting galaxies.<br /> <br /> [http://adsabs.harvard.edu/abs/2014A%26A...568A..70B Additional paper]<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.<br /> <br /> == Johannes Sahlmann ==<br /> Title and abstract coming soon.<br /> <br /> = October 19th =<br /> == Roman Gold ==<br /> Title and abstract coming soon.<br /> <br /> = October 26th =<br /> == Tom Brown ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and Abstract coming soon<br /> <br /> = November 2nd =<br /> == Marc Rafelski ==<br /> On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3<br /> <br /> Abstract coming soon<br /> <br /> == Tony Sohn ==<br /> Title and abstract coming soon.<br /> <br /> <br /> = November 9th =<br /> == Eric Switzer ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = November 16th =<br /> == Fabienne Bastien ==<br /> Title and abstract coming soon.<br /> <br /> = November 30th = <br /> == Mei-Ling Huang ==<br /> Title and abstract coming soon.<br /> <br /> = December 7th =<br /> == Eve Ostriker ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.<br /> <br /> = December 14th =<br /> == Henry Ferguson ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and abstract coming soon.</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=521 2015-09-21T14:40:35Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Solving the DLA Velocity Width Problem]]<br /> |-<br /> |Sep 28 || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees]]<br /> |-<br /> | || Mohammadtaher Safarzadeh (JHU) || [[Wine and Cheese Fall 2015#Mohammadtaher Safarzadeh|Title]]<br /> |-<br /> |Oct 05 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Mapping star formation and metallicity in CALIFA merging galaxies]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Johannes Sahlmann|Coming Soon]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Tony Sohn (JHU) || [[Wine and Cheese Fall 2015#Tony Sohn|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eric Switzer|Coming Soon]]<br /> |-<br /> |Nov 16 || Fabienne Bastien (PSU) || [[Wine and Cheese Fall 2015#Fabienne Bastien|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Mei-Ling Huang (JHU) || [[Wine and Cheese Fall 2015#Mei-Ling Huang|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Eve Ostriker (Princeton), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eve Ostriker|Coming Soon]]<br /> |-<br /> <br /> |-<br /> |-<br /> | Dec 14 || Henry Ferguson (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> <br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=520 2015-09-21T02:14:13Z

<p>Gz323: /* Fall 2015 Schedule */ Fabienne Bastien</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Solving the DLA Velocity Width Problem]]<br /> |-<br /> |Sep 28 || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Helium Reionization Simulations: Seeing the Lyman-alpha Forest for the Trees]]<br /> |-<br /> | || Mohammadtaher Safarzadeh (JHU) || [[Wine and Cheese Fall 2015#Mohammadtaher Safarzadeh|Title]]<br /> |-<br /> |Oct 05 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Mapping star formation and metallicity in CALIFA merging galaxies]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Johannes Sahlmann|Coming Soon]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Tony Sohn (JHU) || [[Wine and Cheese Fall 2015#Tony Sohn|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eric Switzer|Coming Soon]]<br /> |-<br /> |Nov 16 || Fabienne Bastien || [[Wine and Cheese Fall 2015#Fabienne Bastien|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Mei-Ling Huang || [[Wine and Cheese Fall 2015#Mei-Ling Huang|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Eve Ostriker (Princeton), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> <br /> |-<br /> |-<br /> | Dec 14 || Henry Ferguson (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> <br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=509 2015-09-18T15:53:09Z

<p>Gz323: /* Simeon Bird */</p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Testing Gravity using Galaxy Redshift Surveys and CMB''' &lt;br&gt;<br /> <br /> The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements from various other surveys to learn more about cosmology and modified gravity. I will end with a discussion on combining these measurements with CMB lensing in order to probe gravity to better precision and earlier time.<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess'''<br /> <br /> The Fermi satellite has recently detected excess gamma ray emission from the central regions of our Galaxy. This may be evidence for dark matter particles, a major component of the standard cosmological model, annihilating to produce high-energy photons. I will show that the observed signal may instead be generated by millisecond pulsars that formed in dense globular clusters in the Galactic halo. Most of these clusters were ultimately disrupted by evaporation and gravitational tides, contributing to a spherical bulge of stars and stellar remnants. The gamma ray amplitude, angular distribution, and spectral signatures of this source may be predicted without free parameters, and are in remarkable agreement with the observations. The gamma rays are then from the fossil remains of dispersed clusters, and constitute the first direct evidence for the former existence of a much larger globular cluster population.<br /> <br /> == Simeon Bird ==<br /> Solving the DLA Velocity Width Problem<br /> <br /> Matching the kinematics of strong neutral hydrogen absorbers, DLAs, has been a problem for simulations since the late 90's, and it has been suggested represents a problem for structure formation. I will explain how it was solved through a combination of modern galaxy formation models and attention to measurement details.<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.<br /> <br /> == Johannes Sahlmann ==<br /> Title and abstract coming soon.<br /> <br /> = October 19th =<br /> == Roman Gold ==<br /> Title and abstract coming soon.<br /> <br /> = October 26th =<br /> == Tom Brown ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and Abstract coming soon</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=508 2015-09-18T15:52:42Z

<p>Gz323: /* Fall 2015 Schedule */ Simeon Bird</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters as the Source of the Galactic Center GeV Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Solving the DLA Velocity Width Problem]]<br /> |-<br /> |Sep 28 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Coming Soon]]<br /> |-<br /> | || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Coming Soon]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Johannes Sahlmann|Coming Soon]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Coming Soon]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Eric Switzer|Coming Soon]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Eve Ostriker (Princeton), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> <br /> |-<br /> |-<br /> | Dec 14 || Henry Ferguson (STScI), ''Full Seminar'' || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> <br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=499 2015-09-11T14:48:05Z

<p>Gz323: </p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Title]]<br /> |-<br /> | || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Roman Gold|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Invited Speaker'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Invited Speaker'' || [[Wine and Cheese Fall 2015#Eric Switzer|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=498 2015-09-11T14:47:18Z

<p>Gz323: Roman Gold</p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Testing Gravity using Galaxy Redshift Surveys and CMB''' &lt;br&gt;<br /> <br /> The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements from various other surveys to learn more about cosmology and modified gravity. I will end with a discussion on combining these measurements with CMB lensing in order to probe gravity to better precision and earlier time.<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess'''<br /> <br /> Abstract coming soon<br /> <br /> == Simeon Bird ==<br /> Title and Abstract coming soon<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.<br /> <br /> = October 19th =<br /> == Roman Gold ==<br /> <br /> = October 26th =<br /> == Tom Brown ==<br /> ''Full seminar talk'' &lt;p&gt;<br /> Title and Abstract coming soon</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=497 2015-09-11T14:46:11Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Title]]<br /> |-<br /> | || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Roman Gold (UMD) || [[Wine and Cheese Fall 2015#Name|Roman Gold]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Invited Speaker'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Invited Speaker'' || [[Wine and Cheese Fall 2015#Eric Switzer|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=496 2015-09-11T14:45:15Z

<p>Gz323: /* Fall 2015 Schedule */ Roman Gold</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. Each week, there will be either one speaker, giving an hour-long presentation (50+10), or two speakers, each giving a half hour (25+5) presentation. Hour-long speakers will be invited by the committee, and the half-hour speakers will comprise both local researchers and visitors with a wide range of scientific interests. There will be excellent wine, cheese, and other refreshments to go along with the talks and discussions. Should you have any questions, comments, or speaker suggestions, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Jorge Barrera (JHU) || [[Wine and Cheese Fall 2015#Jorge Barrera|Title]]<br /> |-<br /> | || Paul La Plante (CMU) || [[Wine and Cheese Fall 2015#Paul La Plante|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Roman Gold || [[Wine and Cheese Fall 2015#Name|Roman Gold]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Tom Brown (STScI), ''Invited Speaker'' || [[Wine and Cheese Fall 2015#Tom Brown|Coming Soon]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Eric Switzer (GSFC), ''Invited Speaker'' || [[Wine and Cheese Fall 2015#Eric Switzer|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=489 2015-09-02T21:58:17Z

<p>Gz323: /* September 14th */</p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Testing Gravity using Galaxy Redshift Surveys and CMB''' &lt;br&gt;<br /> <br /> The Redshift Space Distortions (RSD) in galaxy redshift surveys can probe the local dynamics at a given epoch of galaxy. I will discuss how redshift can help us learn the local dynamics and hence measure the nature of gravity at the epoch of the galaxy. I will show results from our recent analysis of SDSS-III high redshift sample (CMASS). I will then talk about combining similar RSD measurements from various other surveys to learn more about cosmology and modified gravity. I will end with a discussion on combining these measurements with CMB lensing in order to probe gravity to better precision and earlier time.<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess'''<br /> <br /> Abstract<br /> <br /> == Simeon Bird ==<br /> '''Ttitle'''<br /> <br /> Abstract<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=488 2015-09-02T21:57:38Z

<p>Gz323: Shadab&#039;s title</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. Should you have any questions and/or comments, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Testing Gravity using Galaxy Redshift Surveys and CMB]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Johannes Sahlmann (ESA/STSci)|| [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 02 || Marc Rafelski (GSFC) || [[Wine and Cheese Fall 2015#Marc Rafelski|On the non-evolution of the star formation rate efficiency of HI rich galaxies from z~1-3]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=482 2015-08-26T14:53:56Z

<p>Gz323: </p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. Should you have any questions and/or comments, please contact us: [[CAS Wine and Cheese Committee]].<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Title]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 02 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Committee&diff=481 2015-08-26T14:52:45Z

<p>Gz323: Created page with &quot;__NOTOC__ 400px This page is about the JHU CAS Wine and Cheese Seminar Series. == 2015-2016 == The [[CAS Wine a...&quot;</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> <br /> This page is about the [[CAS Wine and Cheese Seminars|JHU CAS Wine and Cheese Seminar Series]].<br /> <br /> == 2015-2016 ==<br /> The [[CAS Wine and Cheese Seminars|CAS Wine and Cheese Seminars]] Committee in the year of 2015-2016 consists of:<br /> <br /> * Kip Kunz (kkuntz1 at jhu.edu)<br /> * Alex Mendez (ajmendez at jhu.edu)<br /> * Yacine Ali-Haïmoud (yacine.alihaimoud at gmail.com)<br /> * Ting-Wen Lan (tlan at pha.jhu.edu) <br /> * Gail Zasowski ([[Image:GailZasowski Email.jpg]])<br /> * Guangtun Ben Zhu ([[Image:GuangtunZhu Email.jpg]])<br /> <br /> == 2014-2015 ==<br /> Note: The JHU/STScI Wine and Cheese seminar series is merged with CAS astrophysics seminar series in Fall 2014.<br /> <br /> * Hotaka Shiokawa<br /> * Sanch Borthakur<br /> * Gail Zasowski<br /> * Guangtun Ben Zhu<br /> <br /> == 2012-2014 ==<br /> * Nick Indriolo<br /> * Sanch Borthakur<br /> * Guangtun Ben Zhu<br /> * Colin Norman<br /> <br /> == 2009-2012 ==<br /> * Brandon Bozek<br /> * Colin Norman<br /> <br /> == Pre-2009 ==<br /> * Colin Norman had been organizing the Wine &amp; Cheese for about 20 years.<br /> <br /> == See also ==<br /> * [[CAS Wine and Cheese Seminars]]<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=480 2015-08-20T20:03:51Z

<p>Gz323: Hans&#039;s title and abstract</p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> If not specified otherwise, the talks are a 25-min presentation plus a 5-min Q/A session.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Testing Cosmological Models with X-ray Galaxy Clusters (full-hour)''' &lt;br&gt;<br /> <br /> We use a large, statistically very well characterised X-ray flux-limited sample of galaxy clusters to study the large-scale structure of the Universe out to redshifts of ~ 0.4. We use the cluster mass function to obtain tight constraints on the<br /> matter density and amplitude parameter of the density fluctuation power spectrum. We find some tension in the resulting amplitude parameters with the prediction from the PLANCK results in the frame of the standard Lambda-CDM cosmological model. The tension implies a less pronounced fluctuation amplitude of nearby large-scale structure as compared to the predictions based on Planck and a pure LCDM model. The results can be reconciled, however, by for example introducing massive neutrinos. We also use the cluster sample to study the matter distribution in the local Universe in a cosmographical fashion. One of the findings of this research is a locally underdense region in the Southern Galactic Cap region, with interesting consequences for local measurements of cosmological parameters, like the Hubble constant.<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Ttitle''' &lt;br&gt;<br /> Abstract<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess'''<br /> <br /> Abstract<br /> <br /> == Simeon Bird ==<br /> '''Ttitle'''<br /> <br /> Abstract<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=479 2015-08-20T20:00:01Z

<p>Gz323: Hans title</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. For more information, please contact us at [[Image:GailZasowski Email.jpg]] ([[Gail Zasowski]]), tlan at pha.jhu.edu ([[Ting-Wen Lan]]), and [[Image:GuangtunZhu Email.jpg]] ([[Guangtun Ben Zhu]]).<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Testing Cosmological Models with X-ray Galaxy Clusters]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Title]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 02 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=478 2015-08-18T19:10:51Z

<p>Gz323: Added Hans</p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = August 28th =<br /> == Hans Böhringer ==<br /> '''Ttitle (full-hour special seminar)''' &lt;br&gt;<br /> Abstract<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Ttitle''' &lt;br&gt;<br /> Abstract<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess'''<br /> <br /> Abstract<br /> <br /> == Simeon Bird ==<br /> '''Ttitle'''<br /> <br /> Abstract<br /> <br /> = October 12th =<br /> == Moritz Münchmeyer ==<br /> '''Oscillations in the CMB bispectrum '''<br /> <br /> Oscillating signatures in the correlation functions of the primordial density perturbations are predicted by a variety of inflationary models. A theoretical mechanism that has attracted much attention in recent years is a periodic shift symmetry in the inflaton potential, which allows to protect large field models from quantum corrections, as implemented in axion monodromy inflation. This symmetry leads to so called resonance non-gaussianities, whose key feature are logarithmically stretched oscillations in the power spectrum and bispectrum. Oscillations are also a generic consequence of excited (non Bunch-Davies) states during inflation. A number of possible excited states have been proposed, leading to a variety of possible power spectrum and bispectrum shapes. As a third example, sharp features in the potential induce oscillations as the inflaton relaxes back to its attractor solution. Oscillating shapes are therefore a very interesting experimental target. <br /> After giving an overview of these theoretical motivations, I will discuss how to search for these signatures in the CMB data. Fast oscillations are very difficult to search for with traditional estimation techniques, and I will demonstrate how targeted expansions, that exploit the symmetry properties of the underlying shapes, allow to circumvent these difficulties. As a member of the Planck collaboration, I will discuss the Planck results that have been obtained using these methods in the bispectrum, as well as a joint search combining bispectrum and power spectrum. Due to their low overlap with well constrained non-gaussian shapes, as well as their low overlap among each other, oscillating bispectrum shapes are not exhaustively constrained and a potential discovery is therefore not yet ruled out.<br /> My talk will be based in particular on arxiv:1412.3461, arxiv:1505.05882 and Planck publications on inflation and non-gaussianities.</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=477 2015-08-18T19:08:59Z

<p>Gz323: /* Fall 2015 Schedule */ Hans</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. For more information, please contact us at [[Image:GailZasowski Email.jpg]] ([[Gail Zasowski]]), tlan at pha.jhu.edu ([[Ting-Wen Lan]]), and [[Image:GuangtunZhu Email.jpg]] ([[Guangtun Ben Zhu]]).<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Aug 28 || Hans Böhringer (MPE) || [[Wine and Cheese Fall 2015#Hans Böhringer|Title]]<br /> |-<br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Title]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Moritz Münchmeyer (IAP) || [[Wine and Cheese Fall 2015#Moritz Munchmeyer|Oscillations in the CMB bispectrum]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 02 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=471 2015-08-13T18:45:31Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. For more information, please contact us at [[Image:GailZasowski Email.jpg]] ([[Gail Zasowski]]), tlan at pha.jhu.edu ([[Ting-Wen Lan]]), and [[Image:GuangtunZhu Email.jpg]] ([[Guangtun Ben Zhu]]).<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Title]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 02 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Fall_2015&diff=470 2015-08-13T18:40:29Z

<p>Gz323: </p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Fall 2015.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> = September 14th =<br /> == Shadab Alam ==<br /> '''Ttitle''' &lt;br&gt;<br /> Abstract<br /> <br /> == Laurent Pueyo ==<br /> '''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]'''<br /> <br /> Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the ~20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/L⦿=1.6-4.0 × 10−6 and an effective temperature of 600-750 K. For this age and luminosity, “hot-start” formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the “cold-start” core accretion process that may have formed Jupiter.<br /> <br /> = September 21st =<br /> == Tim Brandt ==<br /> '''Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess'''<br /> <br /> Abstract<br /> <br /> == Simeon Bird ==<br /> '''Ttitle'''<br /> <br /> Abstract</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=469 2015-08-13T18:34:11Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. For more information, please contact us at [[Image:GailZasowski Email.jpg]] ([[Gail Zasowski]]), tlan at pha.jhu.edu ([[Ting-Wen Lan]]), and [[Image:GuangtunZhu Email.jpg]] ([[Guangtun Ben Zhu]]).<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Shadab Alam|Title]]<br /> |-<br /> | || Laurent Pueyo (STScI) || [[Wine and Cheese Fall 2015#Laurent Pueyo|Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Tim Brandt|Title]]<br /> |-<br /> | || Simeon Bird (JHU) || [[Wine and Cheese Fall 2015#Simeon Bird|Title]]<br /> |-<br /> |Sep 28 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 02 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=467 2015-08-03T22:03:11Z

<p>Gz323: </p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. For more information, please contact us at [[Image:GailZasowski Email.jpg]] ([[Gail Zasowski]]), tlan at pha.jhu.edu ([[Ting-Wen Lan]]), and [[Image:GuangtunZhu Email.jpg]] ([[Guangtun Ben Zhu]]).<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Sep 28 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 02 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=466 2015-08-02T22:26:08Z

<p>Gz323: /* Fall 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. For more information, please contact us at [[Image:GailZasowski Email.jpg]] ([[Gail Zasowski]]), [[Image:HotakaShiokawa Email.jpg]] ([[Hotaka Shiokawa]]), [[Image:GuangtunZhu Email.jpg]] ([[Guangtun Ben Zhu]]), and tlan at pha.jhu.edu ([[Ting-Wen Lan]]).<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Fall 2015|Fall 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> <br /> |-<br /> |Sep 14 || Shadab Alam (CMU) || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> |Sep 21 || Tim Brandt (IAS) || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Sep 28 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 05 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 12 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 19 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Oct 26 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 02 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 09 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 16 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |Nov 30 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | Dec 07 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> |-<br /> | Dec 14 || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |-<br /> | || Name || [[Wine and Cheese Fall 2015#Name|Title]]<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Spring 2015|Spring 2015 Schedule]]<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=Wine_and_Cheese_Spring_2015&diff=444 2015-04-27T17:44:00Z

<p>Gz323: /* 27 April 2015 */</p> <hr /> <div>{| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> This page records the schedule, titles and abstracts of the [[CAS_Wine_and_Cheese_Seminars|JHU/STScI CAS Astrophysics Wine &amp; Cheese Series]] in Spring 2015.<br /> <br /> &lt;h2&gt;[[CAS_Wine_and_Cheese_Seminars|Back to W&amp;C Schedule]] &lt;/h2&gt;<br /> <br /> <br /> = 26 Jan 2015 = <br /> <br /> == Ingyin Zaw ==<br /> '''Probing the Central Parsec of Active Galactic Nuclei with Water Masers''' &lt;br&gt;<br /> Determining the geometry and dynamics of the inner-most parsec of active galactic nuclei (AGN) is critical for understanding accretion and the relationship between the AGN and host galaxy. Water maser emission at 22 GHz provides a unique tracer, resolvable in position and velocity, of warm, dense molecular gas ~0.1-1.0 pc from the central engine. Furthermore, water masers exist in the narrow temperature range of ~400-1000K and can be used to probe the temperature and temperature gradient inside the AGN disk. I will discuss i) a test of disk heating in accretion models, using maser spectra and VLBI maps, ii) a study of the flow of material in NGC 4945, combining maser VLBI maps and multi-wavelength data, and iii) a search for new maser systems in the Southern Hemisphere, the Tidbinbilla AGN Maser Survey (TAMS).<br /> <br /> == Naoki Bessho ==<br /> '''Particle acceleration during magnetic reconnection in ultrarelativistic electron-positron plasmas''' &lt;br&gt;<br /> In pulsar winds and jets from AGNs, plasma is considered to be composed of ultrarelativistic electrons and positrons with their Lorentz factors 10^3 to 10^6. How these high energy particles are produced is an open question, and magnetic reconnection is one of mechanisms to accelerate particles. We study magnetic reconnection in ultrarelativistic electron-positron plasmas by means of 2-D simulations that include kinetics of particle motion, and investigate particle acceleration mechanisms and energy spectra of accelerated particles.<br /> <br /> = 02 Feb 2015 = <br /> <br /> == Marius Millea ==<br /> '''Planck 2015 Constraints on the Cosmic Neutrino(-like) Background''' &lt;br&gt;<br /> The Planck 2015 results include the tightest measurements to-date of cosmic microwave background (CMB) temperature and polarization anisotropies up to few-arcminute angular scales. I will give a broad overview of the cosmology results from these data, with particular focus on what we have learned about the cosmic neutrino background (CNB). The new data allow more precise answers to questions such as 1) how much energy, parameterized by N_eff, is contained in the CNB? 2) what is the sum of the masses of the particles making up the CNB? and 3) are these particles really neutrinos, i.e. do they free-stream like neutrinos? One possibility I will explore is if some component of the CNB actually comes from axions or axion-like particles. Recent improvements in CMB and BBN data are shedding new light on this scenario. I will also discuss the status of agreement between Planck results and other cosmological probes such as BAO, H0, and low redshift structure measurements, and how the CNB may play a role in resolving tensions between some of them.<br /> <br /> == Colin Hill ==<br /> '''Cosmology from the One-Point Function''' &lt;br&gt;<br /> Cosmological measurements have traditionally focused on the two-point correlation function or power spectrum. However, due to the non-gaussianity of the late-time density field, a vast amount of information potentially lies in the one-point probability distribution function (PDF) of various cosmological observables, such as the weak lensing (WL) convergence or thermal Sunyaev-Zel’dovich (tSZ) effect. We present analytic methods that allow for straightforward and efficient computations of these signals. Using data from the Atacama Cosmology Telescope (ACT), we explicitly demonstrate the power of the tSZ PDF, constraining the amplitude of density fluctuations with an error bar nearly twice as small as that obtained from ACT's earlier analysis of the tSZ skewness alone (with the same data). We extend these methods to the WL convergence field, for both CMB lensing and galaxy lensing, and verify their accuracy by comparing to ray-traced N-body simulations. Combining the WL PDF and power spectrum will increase the cosmological constraining power of upcoming surveys by at least a factor of two.<br /> <br /> = 09 Feb 2015 = <br /> == Katherine Lee ==<br /> '''CARMA Large Area Star Formation Survey (CLASSy)''' &lt;br&gt;<br /> I will present recent results from the CARMA Large Area Star Formation Survey (CLASSy) with a focus on the structures and kinematics of dense gas in Serpens Main. The survey mapped 150 square arcminutes of Serpens Main with an angular resolution of 7 arcsecs using N2H+(1-0), HCO+(1-0), and HCN(1-0) as dense has tracers. The gas emission is concentrated in two subclusters (the NW and SE subclusters). The SE subcluster has more prominent filamentary structures and more complicated kinematics compared to the NW subcluster. I will talk about the properties of the filaments, and their implications to the formation of the SE subcluster. Also, I will compare the properties of the filaments with the distribution of YSOs. The comparison suggests that the YSOs are formed on gravitationally unstable filaments. Finally, I will show velocity gradients perpendicular to the filaments at 0.03 pc scale across CLASSy regions. Such velocity gradients can be a natural consequence of converging flows.<br /> <br /> == Rongmon Bordoloi ==<br /> '''Investigating the Milky Way’s Nuclear Outflow Kinematics''' &lt;br&gt;<br /> Recent observations with gamma ray emission to microwaves and polarized radio waves have detected giant lobes of plasma (Fermi Bubbles) extending above and below the Galactic plane of the Milky Way. These are possible signs of a Nuclear wind powered by either the central black hole or high-surface-density star formation, but our understanding is hampered by a lack of kinematic information. I will report the first results of a HST/COS survey to constrain the velocity of the outflowing gas within these regions, using ultraviolet absorption-line spectra.We perform a comprehensive spectroscopic program to survey the nuclear outflow in both the northern and southern Galactic hemispheres.We combine high-resolution STIS E140M observations of distant halo stars at low latitude with medium-resolution COS observations of AGNs at higher latitude. These sightline pass through a clear biconical structure seen in hard X-ray and gamma-ray emission of the Fermi Bubble. I will report detections of high velocity metal absorption lines, which cannot be explained by co-rotating gas in the Galactic disk or halo. Their velocities are suggestive of an origin on the front and back side of an expanding biconical outflow emanating from the Galactic center. We develop simple kinematic biconical outflow models that can explain the observed profiles with an outflow velocity of ~900/1000 km/s and a full opening angle of ≈110° (matching the X-ray bicone). This indicates Galactic center activity over the last ≈2.5-5.0 Myr, in line with age estimates of the Fermi Bubbles. The observations illustrate the use of UV spectroscopy to probe the properties of swept-up gas venting into the Fermi Bubbles.<br /> <br /> = 16 Feb 2015 =<br /> == Yacine Ali-Haïmoud ==<br /> '''Perturbative interaction approach to cosmological structure formation'''<br /> <br /> The statistical properties of cold dark matter (CDM) in the non-linear regime make for a technically challenging problem, and their study has been the bread-and-butter of several generations of cosmologists. Standard analytical methods improve upon linear perturbation theory on quasi-linear scales, but usually fail dramatically at non-linear scales. A new and promising method was recently introduced by researchers in the field, relying on an expansion in the gravitational interaction, and using mathematical tools inspired by those of quantum field theory. This method seemed to produce results in good agreement with numerical simulations, deep inside the non-linear regime. In this talk, after reviewing standard perturbation schemes, I will lay out a simpler formalism for the perturbative interaction approach, using implicit forms for particle trajectories. I will show that this approach fails at recovering the linear growth factor on large scales, and that the apparent agreement on non-linear scales results from unjustified approximations. The problem of finding an analytical description of non-linear scales therefore remains open.<br /> <br /> == Nao Suzuki ==<br /> '''Future SNIa surveys and Blackbody Spectra'''<br /> <br /> Hyper Suprime-Cam (HSC) is a new wide-field camera on Subaru Telescope in Hawaii. HSC has a 1.5-degree field-of-view (FOV) in diameter with 104 CCD chips and 5 broad-band filters (g,r,i,z,y). Started from March 2014, a five-year survey program has been running, and I will introduce the survey plan and current status with emphasis on Type Ia supernova (SNIa) survey. Also, I will introduce a potential mid-size IR satellite mission, WISH (http://wishmission.org/en/index.html). In SNIa cosmology, the reduction of the systematic error is an urgent task, and I will propose how to reduce the calibration error by using white dwarfs with nearly a perfect blackbody spectrum.<br /> <br /> = 23 Feb 2015 =<br /> == Rubab Khan ==<br /> '''Massive Star Geriatrics''' &lt;br&gt;<br /> <br /> The evolution of the most massive stars such as Eta Carinae is controlled by the effects of mass-loss. Understanding these stars is challenging because no true analogs of Eta Car have been clearly identified in the Milky Way or other galaxies. Copious mass-loss leads to circumstellar dust formation, obscuring the star in the optical. But as the light is re-emitted by the dust, these objects become very luminous in the mid-IR. We have carried out a systematic search for Eta Car analogs in 7 galaxies, utilizing data from Spitzer, Herschel, HST and other sources. Our search detected no true analogs of Eta Car, however, we do identify a significant population of 18 lower luminosity (log(L/L_sun)=~5.5-6.0) dusty stars. This is consistent with all 25 &lt; M &lt; 60 M_sun stars undergoing an obscured phase at most lasting a few thousand years once or twice. The mass of the obscuring material is of order ~M_sun, and we simply do not find enough heavily obscured stars for these phases to represent more than a modest fraction (~10% not ~50%) of the total mass lost by these stars. While this search has been feasible using archival Spitzer data, JWST will be a far more powerful probe of these stars. The HST-like resolution of JWST will greatly reduce the problem of confusion and expand the possible survey volume.<br /> <br /> == Jon Bird ==<br /> '''Clues to Galaxy Formation from the Milky Way's Cosmological Context''' &lt;br&gt;<br /> <br /> Very different data sets guide galaxy formation theory across cosmic history: from the global properties of &gt;10^7 galaxies at high redshift (z&gt;0.5) to the kinematics and chemistry of &gt;10^6 stars here in the Milky Way. Traditional observational and computational limitations have dictated independent study of these two regimes. I will discuss how this picture is changing rapidly and how viewing the MW as important boundary condition on galaxy evolution puts unprecedented demands on galaxy formation theory. In particular, I will discuss a novel disk formation mechanism and its signature in current observations of the Milky Way and the resolved kinematics of high redshift galaxies. Modern, high-resolution, cosmological galaxy formation simulations reveal that disks can grow ``upside-down&quot; in the sense that progressively younger stellar populations are born with increasingly smaller vertical velocity dispersion, tracing the kinematics of the collapsing gas disk from which they form. We find that the upside-down model matches the most stringent observational constraints here in the MW, including the steep stellar age-velocity relationship measured in the solar neighborhood. I will argue that traditional interpretations of the MW stellar AVR contradicts evidence from IFU observations of high-redshift disk galaxies and must be revised. Our findings suggest that the &quot;upside-down&quot; model is currently the only self-consistent formation mechanism able to match kinematic constraints from z~2 to z~0. I will conclude with preliminary, yet tantalizing, evidence connecting the star formation history of simulated galaxies with their detailed morphology.<br /> <br /> = 02 Mar 2015 =<br /> <br /> == Alexie Leauthaud ==<br /> '''Evolving Galaxies in a Dark Universe''' &lt;br&gt;<br /> <br /> A fundamental goal in observational cosmology is to understand the link between the luminous properties of galaxies and the dark matter halos in which they reside. Because this link is fundamental to processes that determine the growth, evolution, and global properties of galaxies, key insight can be gained by mapping how the distributions of dark and luminous matter vary across different scales and over cosmic time. In this talk I will discuss new methods to probe the galaxy-halo connection from galaxy scales (tens of kpc to 100 kpc) out to the scale of dark matter halos, themselves (hundreds of kpc to a Mpc). On the smallest scales, I will show that novel weak lensing techniques applied to upcoming surveys such as WFIRST and Euclid can map the inner density profiles of galaxies and provide strong constraints on the inner slope of dark matter as well as the stellar IMF. In the second half of the talk I will shift to the largest scales where a combination of probes provides insight about how galaxies grow (or do not grow) in relation to their global reservoirs of fuel. In particular, I will present a new, comprehensive framework that describes how the most massive galaxies populate dark matter halos and how their colors may be determined by their halo assembly history. Even before more powerful constraints from future surveys, I will show how such models combined with state-of the art measurements of weak gravitational lensing and galaxy clustering from the CS82 and BOSS surveys are already yielding surprising discoveries.<br /> <br /> = 09 Mar 2015 =<br /> <br /> == Nicole Czakon ==<br /> '''Scaling Sunyaev-Zel'dovich Observables to Dark Matter Halos for Cluster Cosmology ''' &lt;br&gt;<br /> The Sunyaev-Zel’dovich effect (SZE) is a powerful tool to study galaxy clusters out to large radii and to detect clusters at high redshifts. To first order, clusters are self-similar and one can link the SZE signal to a cluster’s physical properties by assuming a spherical distribution of matter in hydrostatic equilibrium. The SZE signal, however, will be affected by any astrophysical process that contributes non-thermal pressure support or if the cluster has non-spherical morphology. We have measured the SZE signal of 45 massive clusters using Bolocam at 140 GHz. After measuring the scaling relations of the SZE signal with total cluster mass, we find our clusters to be approximately 5-sigma shallower than the self-similar HSE prediction--a result that is in tension with most other SZE scaling relations studies. To confirm our measurements, we have implemented a series of tests to see whether, among others, sample selection, redshift, degree of disturbance, or alternative mass proxies might affect our measurements. We believe our results to be robust to the extent to which we are able to constrain the cluster properties with current observations. If confirmed, this would have a major impact on our understanding of galaxy clusters and cluster cosmology.<br /> <br /> == Kate Daniel ==<br /> '''Constraints on the Efficiency of Radial Migration in Spiral Galaxies''' &lt;br&gt;<br /> A transient spiral pattern can permanently rearrange the orbital angular momentum distribution of a stellar disk without inducing kinematic heating. This redistribution happens around the radius of corotation, where the circular orbital frequency equals the spiral pattern speed, and leads to what is now called “radial migration”. Should radial migration be an efficient process it could cause a large fraction of disk stars to experience significant changes in their individual orbital angular momenta over the lifetime of the disk. Such scenarios have strong implications for the chemical, structural and kinematic evolution of disk galaxies. I present some results from an investigation into the physical dependencies of the efficiency of radial migration on stellar kinematics and spiral structure.<br /> <br /> <br /> = 23 Mar 2015 =<br /> <br /> == Kendrick Smith ==<br /> '''Primordial non-Gaussianity in the CMB and Large-Scale Structure''' &lt;br&gt;<br /> I'll give a pedagogical review of inflation and explain how its physics can be constrained by searching for &quot;primordial non-Gaussianity&quot;, i.e., differences between the statistics of the initial curvature field in our universe and the statistics of an ideal Gaussian field. Then I'll talk about observational CMB constraints, including some new results from Planck. Finally I'll discuss future prospects for improving Planck constraints with large-scale surveys such as Euclid and LSST.<br /> <br /> == Sanch Borthakur ==<br /> '''Probing the Connection Between the Circumgalactic Medium and the Interstellar Medium of Galaxies''' &lt;br&gt;<br /> <br /> We present the first statistical study probing the connection between the circumgalactic medium (CGM) and the atomic hydrogen content within galaxies. The survey utilizes Hubble Space Telescope ultraviolet spectroscopy to probe the hidden baryonic content in the CGM for 47 galaxies from the GALEX Arecibo SDSS Survey (GASS). <br /> <br /> We find strong correlations between the amount of H I gas in the ISM of the galaxies and the neutral gas content in the CGM. These are stronger than the analogous correlations between the star-formation rates and the CGM content. Additionally, the velocity spread of the circumgalactic gas is consistent with that seen in the atomic gas in the interstellar medium. These results imply a physical connection between the H I disk and the CGM on scales an order-of-magnitude larger. This is consistent with the picture in which the H I disk is nourished by accretion of gas from the CGM.<br /> <br /> = 30 Mar 2015 = <br /> <br /> == Katie Harrington ==<br /> '''CLASS: The Cosmology Large Angular Scale Surveyor ''' &lt;br&gt;<br /> The detection and characterization of the primordial B-modes in the polarization of the cosmic microwave background (CMB) is one of the next major steps in developing our understanding of the early universe. Primordial B-modes, a divergence-free polarization pattern in the CMB, are solely sourced by gravitational waves created during the epoch of inflation. Detecting the primordial B-modes would represent a “smoking gun” for inflation and provide evidence of a period of exponential expansion in the early universe. The detection of the primordial B-modes requires a precise measurement of the CMB polarization on large angular scales with multiple frequencies for galactic foreground removal. The Cosmology Large Scale Angular Surveyor (CLASS) is a four frequency telescope array with a rapid front-end polarization modulator sited in the Chilean Atacama desert, making it uniquely suited for detecting the primordial B-mode signal.<br /> <br /> == Peter Polko ==<br /> '''From Accretion Flow to Particle Acceleration: New Relativistic Magnetohydrodynamic Jet Solutions''' &lt;br&gt;<br /> <br /> Observations of jets show us that the electrons throughout the jet have a power-law energy distribution, even though the electron cooling time due to radiation is much shorter than the lifetime of the jet. This result implies that the electrons are continuously accelerated in the jet, and we associate the onset of this process with a shock at the outermost magnetohydrodynamic (MHD) singular point in the outflow.<br /> <br /> I will give a short overview of MHD jet physics, and show how we developed a semi-analytical model that describes the jet from very close to the black hole to this first shock, allowing us to better model the expected emission from a black hole system.<br /> <br /> = 06 April 2015 =<br /> <br /> == Tomohiro Nakama ==<br /> '''On whether supermassive black holes can be explained by primordial black holes''' &lt;br&gt;<br /> Supermassive black holes and intermediate mass black holes are believed to exist in the Universe. There is no established astrophysical explanation for their origin and considerations have been made in the literature that those massive black holes (MBHs) may be primordial black holes (PBHs), black holes which are formed in the early universe (well before the matter-radiation equality) due to the direct collapse of primordial overdensities. I will discuss the possibility of excluding the PBH scenario as the origin of the MBHs. I first revisit the constraints on PBHs obtained from the CMB distortion that the seed density perturbation causes. I also discuss a new method which can potentially exclude small PBHs as well. We first observe that large density perturbations required to create PBHs also result in the copious production of ultracompact minihalos (UCMHs), compact dark matter halos formed at around the recombination. From this observation, we show that weakly interacting massive particles (WIMPs) as dark matter annihilate efficiently inside UCMHs to yield cosmic rays far exceeding the observed flux. Our bound gives severe restriction on the compatibility between the particle physics models for WIMPs and the PBH scenario as the explanation of MBHs.<br /> <br /> == Brooks Kinch ==<br /> '''Fe K-alpha Emission Lines from Simulations of Black Hole Accretion''' &lt;br&gt;<br /> The Fe K-alpha fluorescent emission line is a ubiquitous spectral feature in observations of both stellar-mass black holes and active galactic nuclei. It originates from X-ray irradiation of the accretion disk, which extends deep into the gravitational well---thus the Fe K-alpha line provides an excellent diagnostic of the physical conditions and spacetime geometry in the vicinity of the black hole. I will describe how, starting from genuine physical principles and introducing as few assumptions as possible, we produce theoretical predictions for the Fe K-alpha line shape and intensity. In addition, I will give a brief comparison to and discussion of some current Fe K-alpha observations. Finally, I will discuss some frontier applications of this work, e.g., the use of X-ray reflection spectroscopy in the measurement of black hole spin.<br /> <br /> = 13 April 2015 = <br /> <br /> == Xavier Dumusque ==<br /> <br /> '''Pushing the radial-velocity precision to unveil Earth-mass exoplanets''' &lt;br&gt;<br /> At the meter per second precision reached by the best nowadays radial-velocity (RV) spectrographs, very subtle signatures of astrophysical noises start to be revealed. From a nearly continuous timescale ranging from several minutes to several years, stellar oscillations, granulation phenomena, short-term and long-term activity induce a RV signal that mask the RV signature induced by small-mass planets orbiting far from their host star.<br /> Some of these astrophysical noises are now well understood and strategies to average them out have been found, however still an important work needs to be done for other sources of noise.<br /> During my talk, I will give an overview of the work that have been carried on these last years and will try to focus on the main nowadays limitations.<br /> <br /> == Samantha Hoffmann ==<br /> <br /> '''Mega-SH0ES: Searching for Cepheid Variables in Type Ia Supernova Host Galaxies''' &lt;br&gt;<br /> The Mega-SH0ES project aims to measure the Hubble constant to percent-level uncertainty. As part of this ongoing effort, we determine accurate and precise Cepheid distances to host galaxies of type Ia supernovae within 50 Mpc. I will present preliminary results from our latest HST/WFC3 observations, in which time-series data is obtained using a long pass filter (F350LP) to detect variability while conserving orbits and infrared images (F160W) are used to construct a precise P-L relation with low systematic uncertainty. We combine the new targets with the ones previously analyzed in Riess et al. (2011) and will calibrate the Extragalactic Distance Scale with a record 17 SNeIa host galaxies.<br /> <br /> = 20 April 2015 = <br /> <br /> == Liang Dai ==<br /> '''Relativistic clustering and separate universes''' &lt;br&gt;<br /> The separate universe conjecture states that in General Relativity a long-wavelength density perturbation affects physics locally such that short-scale gravitational clustering takes place in a separate universe with different background density and curvature. We construct Conformal Fermi Coordinates to verify this conjecture for small cosmological scalar perturbations on arbitrary scales. In this case, the isotropic part of the perturbation is entirely absorbed into a modified local expansion history and spatial geometry. The anisotropic part, on the other hand, is exactly captured by a tidal field in the Newtonian form. The separate universe picture is restricted to scales larger than the sound horizons of relevant cosmic fluids. Using this formalism, an expression can be derived for the locally measured matter bispectrum induced by a long-wavelength mode of arbitrary wavelength, a new result which in standard perturbation theory is equivalent to a relativistic second-order calculation. It can be shown that nonlinear gravitational dynamics does not generate nonlinear clustering that scales like local-type primordial non-Gaussianity f_NL. Rather, contamination to f_NL type non-Gaussianity only arises from relativistic projection effects on photon propagation, which depend on the specific large-scale structure tracer and observable considered, and are in principle distinguishable from nonlinear gravitational clustering.<br /> <br /> == Jennifer Sobeck ==<br /> '''APOGEE I/O: Efforts to Effectively Harness the Large Scale Data Set of the APOGEE 1+2 Survey''' &lt;br&gt;<br /> The first phase of the Apache Point Observatory Galactic Evolution Experiment (APOGEE-1), a cornerstone project of the Sloan Digital Sky Survey III (SDSS-III), performed a large-scale, spectroscopic survey of the Milky Way conducted from the Northern Hemisphere, aimed at tracing the chemodynamical evolution of the Milky Way. Now, the SDSS-IV APOGEE-2 Survey is underway, with observations being carried out at both Northern and Southern Hemisphere locations. APOGEE acquires high-resolution, high signal-to-noise spectra in the H-band (1.51-1.69 microns) and produces stellar atmospheric parameters, individual element abundance ratios for 15 species, and radial velocity measurements for its stars. By 2020, data will have been collected for several hundred thousand stars from all components of the Galaxy (all disk quadrants, the inner and outer halo, the full expanse of the bulge, and local satellites). Accordingly, the combined APOGEE 1+2 data set is tailor-made for the comprehensive and systematic examination of Galactic formation and evolution. I will give an updated overview of the APOGEE 1+2 Survey, briefly discuss endeavors to improve the data product determination (such as enhancing the atomic physics inputs), and describe initial data mining efforts and the use of APOGEE data products to assemble composite chemical and kinematic profiles for target stellar populations.<br /> <br /> = 27 April 2015 =<br /> <br /> == Johan Mazoyer ==<br /> <br /> '''Extrasolar Planetary Systems Imaging''' &lt;br&gt;<br /> Johan will discuss the development of innovative instruments for imaging circumstellar environments and in the analysis of high contrast images to detect and analyze planets and/or dust at close separations around these stars.<br /> <br /> == Daan Meerburg ==<br /> <br /> '''Optimal estimator for resonant bispectra in the Cosmic Microwave Background''' &lt;br&gt;<br /> With a cosmic variance limited measurement of the CMB power spectrum we have almost exhausted the information available in the almost Gaussian CMB. Within the next years we hope to further explore the polarization and measure higher order correlation functions in the CMB that improve our understanding of the early Universe. In this talk I will focus on a particular class of CMB bispectra known as resonant bispectra. These spectra have rapidly varying features on top of the late-time BOA features. Only recently, and only for a limited number of frequencies, have these bispectra been constrained using the Planck data. I will discuss a newly proposed estimator of such bispectra and show that we should be able to probe any frequency that one expect from an EFT argument (and beyond), because the estimator relies on the fact that most of the theoretical shapes are at most 1 dimensional (while the full bispectrum is 3 dimensional).<br /> <br /> = 04 May 2015 =<br /> <br /> == Agnieszka Cieplak ==<br /> '''TBD''' &lt;br&gt;<br /> TBD<br /> == Lixin Dai (UMD) ==<br /> '''TBD''' &lt;br&gt;<br /> TBD<br /> <br /> = 11 May 2015 =<br /> <br /> == Tim Brandt (IAS) ==<br /> '''TBD''' &lt;br&gt;<br /> TBD</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=443 2015-04-27T17:42:42Z

<p>Gz323: /* Spring 2015 Schedule */ Johan Mazoyer</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. For more information, please contact us at [[Image:GailZasowski Email.jpg]] ([[Gail Zasowski]]), [[Image:HotakaShiokawa Email.jpg]] ([[Hotaka Shiokawa]]), [[Image:GuangtunZhu Email.jpg]] ([[Guangtun Ben Zhu]]), and tlan at pha.jhu.edu ([[Ting-Wen Lan]]).<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Spring 2015|Spring 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> |-<br /> |January 26 || Ingyin Zaw (NYU Abu Dhabi) || [[Wine and Cheese Spring 2015#Ingyin Zaw|Probing the Central Parsec of Active Galactic Nuclei with Water Masers]]<br /> |-<br /> | || Naoki Bessho (NASA/UMD) || [[Wine and Cheese Spring 2015#Naoki Bessho|Particle acceleration during magnetic reconnection in ultrarelativistic electron-positron plasmas]]<br /> |-<br /> |-<br /> |February 02 || Marius Millea (UC Davis) || [[Wine and Cheese Spring 2015#Marius Millea|Planck 2015 Constraints on the Cosmic Neutrino(-like) Background]]<br /> |-<br /> | || Colin Hill (Columbia) || [[Wine and Cheese Spring 2015#Colin Hill|Cosmology from the One-Point Function]]<br /> |-<br /> |-<br /> |February 09 || Katherine Lee (Harvard) || [[Wine and Cheese Spring 2015#Katherine Lee|CARMA Large Area Star Formation Survey (CLASSy)]]<br /> |-<br /> | || Rongmon Bordoloi (STScI) || [[Wine and Cheese Spring 2015#Rongmon Bordoloi|Investigating the Milky Way’s Nuclear Outflow Kinematics]]<br /> |-<br /> |-<br /> |February 16 || Yacine Ali-Haïmoud (JHU) || [[Wine and Cheese Spring 2015#Yacine Ali-Haïmoud|Perturbative interaction approach to cosmological structure formation]]<br /> |-<br /> | || Nao Suzuki (IPMU) || [[Wine and Cheese Spring 2015#Nao Suzuki|Future SNIa surveys and Blackbody Spectra]]<br /> |-<br /> |-<br /> |February 23 || Rubab Khan (GSFC) || [[Wine and Cheese Spring 2015#Rubab Khan|Massive Star Geriatrics]]<br /> |-<br /> | || Jon Bird (Vanderbilt) || [[Wine and Cheese Spring 2015#Jon Bird|Clues to Galaxy Formation from the Milky Way's Cosmological Context]]<br /> |-<br /> |-<br /> |March 02 || Alexie Leauthaud (IPMU, Full seminar) || [[Wine and Cheese Spring 2015#Alexie Leauthaud|Evolving Galaxies in a Dark Universe]]<br /> |-<br /> |-<br /> |-<br /> |-<br /> | March 09 || Nicole Czakon (ASIAA) || [[Wine and Cheese Spring 2015#Nicole Czakon|Scaling Sunyaev-Zel'dovich Observables to Dark Matter Halos for Cluster Cosmology ]]<br /> |-<br /> |-<br /> | || Kate Daniel (JHU) || [[Wine and Cheese Spring 2015#Kate Daniel|Constraints on the Efficiency of Radial Migration in Spiral Galaxies]]<br /> |-<br /> |-<br /> | March 23 || Kendrick Smith (Perimeter) || [[Wine and Cheese Spring 2015#Kendrick Smith|Primordial Non-Gaussianity in the CMB and Large-Scale Structure]]<br /> |-<br /> |-<br /> | || Sanch Borthakur (JHU) || [[Wine and Cheese Spring 2015#Sanch Borthakur|Probing the Connection Between the Circumgalactic Medium and the Interstellar Medium of Galaxies]]<br /> |-<br /> |-<br /> | March 30 || Katie Harrington (JHU) || [[Wine and Cheese Spring 2015#Katie Harrington|CLASS: The Cosmology Large Angular Scale Surveyor]]<br /> |-<br /> |-<br /> | || Peter Polko (UMD) || [[Wine and Cheese Spring 2015#Peter Polko|From Accretion Flow to Particle Acceleration: New Relativistic Magnetohydrodynamic Jet Solutions]]<br /> |-<br /> |-<br /> | April 06 || Tomohiro Nakama || [[Wine and Cheese Spring 2015#Tomohiro Nakama|On whether supermassive black holes can be explained by primordial black holes]]<br /> |-<br /> |-<br /> | || Brooks Kinch (JHU) || [[Wine and Cheese Spring 2015#Brooks Kinch|Fe K-alpha Emission Lines from Simulations of Black Hole Accretion]]<br /> |-<br /> |-<br /> | April 13 || Xavier Dumusque (CfA) || [[Wine and Cheese Spring 2015#Xavier Dumusque|Pushing the radial-velocity precision to unveil Earth-mass exoplanets]] <br /> |-<br /> |-<br /> | || Samantha Hoffmann (JHU) || [[Wine and Cheese Spring 2015#Samantha Hoffmann|Mega-SH0ES: Searching for Cepheid Variables in Type Ia Supernova Host Galaxies]]<br /> |-<br /> |-<br /> | April 20 || Liang Dai (JHU) || [[Wine and Cheese Spring 2015#Liang Dai|Relativistic clustering and separate universes]]<br /> |-<br /> |-<br /> | || Jennifer Sobeck (UVa) || [[Wine and Cheese Spring 2015#Jennifer Sobeck|APOGEE I/O: Efforts to Effectively Harness the Large Scale Data Set of the APOGEE 1+2 Survey]]<br /> |-<br /> |-<br /> | April 27 || Johan Mazoyer (STScI) || [[Wine and Cheese Spring 2015#Johan Mazoyer|Extrasolar Planetary Systems Imaging]]<br /> |-<br /> |-<br /> | || Daan Meerburg (CITA) || [[Wine and Cheese Spring 2015#Daan Meerburg|Optimal estimator for resonant bispectra in the Cosmic Microwave Background]]<br /> |-<br /> |-<br /> | May 04 || Agnieszka Cieplak (Brookhaven National Laboratory) || [[Wine and Cheese Spring 2015#Agnieszka Cieplak|TBD]]<br /> |-<br /> |-<br /> | || Lixin Dai (UMD) || [[Wine and Cheese Spring 2015#TBD|TBD]]<br /> |-<br /> |-<br /> | May 11 || Tim Brandt (IAS) || [[Wine and Cheese Spring 2015|TBD]]<br /> |-<br /> |-<br /> | || || [[Wine and Cheese Spring 2015#TBD|TBD]]<br /> |-<br /> |-<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323 https://caswiki.johnshopkins.edu/index.php?title=CAS_Wine_and_Cheese_Seminars&diff=440 2015-04-17T17:59:05Z

<p>Gz323: /* Spring 2015 Schedule */</p> <hr /> <div>__NOTOC__<br /> [[Image:Winecheese.jpeg|right|400px]]<br /> The JHU/STScI [[CAS Wine and Cheese Seminars]] take place in Bloomberg 462 every Monday at 4:00 pm Eastern. There will be two speakers every week, each giving a half hour (25+5) presentation. These speakers will comprise both local researchers and visitors --- ideally one of each per week --- with a wide range of scientific interests. There will be excellent wine and cheese/refreshments to go along with the talks and discussions. For more information, please contact us at [[Image:GailZasowski Email.jpg]] ([[Gail Zasowski]]), [[Image:HotakaShiokawa Email.jpg]] ([[Hotaka Shiokawa]]), [[Image:GuangtunZhu Email.jpg]] ([[Guangtun Ben Zhu]]), and tlan at pha.jhu.edu ([[Ting-Wen Lan]]).<br /> <br /> &lt;br&gt; <br /> <br /> '''Where''': Bloomberg 462 (Directions can be found here: [[Visitor Parking | How to get here]])<br /> <br /> '''When''': Every Monday at 4:00 pm<br /> <br /> '''Who''': Everyone is welcome<br /> <br /> '''Format''': Keynote/PPT, PDF, or blackboard format. (Speakers may use their own laptops, and we will check that the display works ahead of time. Please have slides available online or on a portable drive in case we need to use a different computer.)<br /> <br /> &lt;br&gt;<br /> <br /> == [[Wine and Cheese Spring 2015|Spring 2015 Schedule]] ==<br /> <br /> {| border=&quot;1&quot; style=&quot;text-align:left;&quot;<br /> ! align=&quot;left&quot; |Date<br /> ! Speaker<br /> ! Title <br /> |-<br /> |-<br /> |January 26 || Ingyin Zaw (NYU Abu Dhabi) || [[Wine and Cheese Spring 2015#Ingyin Zaw|Probing the Central Parsec of Active Galactic Nuclei with Water Masers]]<br /> |-<br /> | || Naoki Bessho (NASA/UMD) || [[Wine and Cheese Spring 2015#Naoki Bessho|Particle acceleration during magnetic reconnection in ultrarelativistic electron-positron plasmas]]<br /> |-<br /> |-<br /> |February 02 || Marius Millea (UC Davis) || [[Wine and Cheese Spring 2015#Marius Millea|Planck 2015 Constraints on the Cosmic Neutrino(-like) Background]]<br /> |-<br /> | || Colin Hill (Columbia) || [[Wine and Cheese Spring 2015#Colin Hill|Cosmology from the One-Point Function]]<br /> |-<br /> |-<br /> |February 09 || Katherine Lee (Harvard) || [[Wine and Cheese Spring 2015#Katherine Lee|CARMA Large Area Star Formation Survey (CLASSy)]]<br /> |-<br /> | || Rongmon Bordoloi (STScI) || [[Wine and Cheese Spring 2015#Rongmon Bordoloi|Investigating the Milky Way’s Nuclear Outflow Kinematics]]<br /> |-<br /> |-<br /> |February 16 || Yacine Ali-Haïmoud (JHU) || [[Wine and Cheese Spring 2015#Yacine Ali-Haïmoud|Perturbative interaction approach to cosmological structure formation]]<br /> |-<br /> | || Nao Suzuki (IPMU) || [[Wine and Cheese Spring 2015#Nao Suzuki|Future SNIa surveys and Blackbody Spectra]]<br /> |-<br /> |-<br /> |February 23 || Rubab Khan (GSFC) || [[Wine and Cheese Spring 2015#Rubab Khan|Massive Star Geriatrics]]<br /> |-<br /> | || Jon Bird (Vanderbilt) || [[Wine and Cheese Spring 2015#Jon Bird|Clues to Galaxy Formation from the Milky Way's Cosmological Context]]<br /> |-<br /> |-<br /> |March 02 || Alexie Leauthaud (IPMU, Full seminar) || [[Wine and Cheese Spring 2015#Alexie Leauthaud|Evolving Galaxies in a Dark Universe]]<br /> |-<br /> |-<br /> |-<br /> |-<br /> | March 09 || Nicole Czakon (ASIAA) || [[Wine and Cheese Spring 2015#Nicole Czakon|Scaling Sunyaev-Zel'dovich Observables to Dark Matter Halos for Cluster Cosmology ]]<br /> |-<br /> |-<br /> | || Kate Daniel (JHU) || [[Wine and Cheese Spring 2015#Kate Daniel|Constraints on the Efficiency of Radial Migration in Spiral Galaxies]]<br /> |-<br /> |-<br /> | March 23 || Kendrick Smith (Perimeter) || [[Wine and Cheese Spring 2015#Kendrick Smith|Primordial Non-Gaussianity in the CMB and Large-Scale Structure]]<br /> |-<br /> |-<br /> | || Sanch Borthakur (JHU) || [[Wine and Cheese Spring 2015#Sanch Borthakur|Probing the Connection Between the Circumgalactic Medium and the Interstellar Medium of Galaxies]]<br /> |-<br /> |-<br /> | March 30 || Katie Harrington (JHU) || [[Wine and Cheese Spring 2015#Katie Harrington|CLASS: The Cosmology Large Angular Scale Surveyor]]<br /> |-<br /> |-<br /> | || Peter Polko (UMD) || [[Wine and Cheese Spring 2015#Peter Polko|From Accretion Flow to Particle Acceleration: New Relativistic Magnetohydrodynamic Jet Solutions]]<br /> |-<br /> |-<br /> | April 06 || Tomohiro Nakama || [[Wine and Cheese Spring 2015#Tomohiro Nakama|On whether supermassive black holes can be explained by primordial black holes]]<br /> |-<br /> |-<br /> | || Brooks Kinch (JHU) || [[Wine and Cheese Spring 2015#Brooks Kinch|Fe K-alpha Emission Lines from Simulations of Black Hole Accretion]]<br /> |-<br /> |-<br /> | April 13 || Xavier Dumusque (CfA) || [[Wine and Cheese Spring 2015#Xavier Dumusque|Pushing the radial-velocity precision to unveil Earth-mass exoplanets]] <br /> |-<br /> |-<br /> | || Samantha Hoffmann (JHU) || [[Wine and Cheese Spring 2015#Samantha Hoffmann|Mega-SH0ES: Searching for Cepheid Variables in Type Ia Supernova Host Galaxies]]<br /> |-<br /> |-<br /> | April 20 || Liang Dai (JHU) || [[Wine and Cheese Spring 2015#Liang Dai|Relativistic clustering and separate universes]]<br /> |-<br /> |-<br /> | || Jennifer Sobeck (UVa) || [[Wine and Cheese Spring 2015#Jennifer Sobeck|APOGEE I/O: Efforts to Effectively Harness the Large Scale Data Set of the APOGEE 1+2 Survey]]<br /> |-<br /> |-<br /> | April 27 || Laurent Pueyo (STScI) || [[Wine and Cheese Spring 2015#Laurent Pueyo|TBD]]<br /> |-<br /> |-<br /> | || Daan Meerburg (CITA) || [[Wine and Cheese Spring 2015#Daan Meerburg|TBD]]<br /> |-<br /> |-<br /> | May 04 || Agnieszka Cieplak (Brookhaven National Laboratory) || [[Wine and Cheese Spring 2015#Agnieszka Cieplak|TBD]]<br /> |-<br /> |-<br /> | || Lixin Dai (UMD) || [[Wine and Cheese Spring 2015#TBD|TBD]]<br /> |-<br /> |-<br /> | May 11 || Tim Brandt (IAS) || [[Wine and Cheese Spring 2015|TBD]]<br /> |-<br /> |-<br /> | || || [[Wine and Cheese Spring 2015#TBD|TBD]]<br /> |-<br /> |-<br /> |}<br /> <br /> <br /> ----<br /> <br /> == Past Seminars ==<br /> * [[Wine and Cheese Fall 2014|Fall 2014 Schedule]]<br /> * [https://sites.google.com/site/jhustsciastrowinecheese/ JHU/STScI Wine &amp; Cheese Seminar Series (before Fall 2014)]<br /> * [http://www.pha.jhu.edu/~stephan/CAS_seminar/ JHU CAS Seminars (before Fall 2014)]<br /> <br /> <br /> == See also ==<br /> * [[Astro-ph Coffee]]<br /> * [[People]]<br /> * [[STScI Colloquium]]</div>

Gz323