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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1205
DTSTART:20080919T210000Z
DURATION:PT1H0M0S
DTSTAMP:20260506T200040Z
LAST-MODIFIED:20080910T175721Z
LOCATION:2241 Chamberlin Hall (coffee at 3:30 pm)
SUMMARY:Rapture of the Deep Sky\, Physics Department Colloquium\, Prof
 essor Melville P. Ulmer\,  Department of Physics & Astronomy\, Northwe
 stern University
DESCRIPTION:Astronomers have become "drunk" like deep sea divers with 
 observations of the deep (faint object) sky.  This has lead to a host 
 of telescopes that enable us to see fainter and fainter than ever befo
 re.  The majority of astronomers have focused on finding the most dist
 ant objects\, but exciting science can be done by going fainter beside
 s pushing to the edges of the Universe. I will show how I have taken a
 dvantage of the ability to detect faint sky objects to study clusters 
 of galaxies.  These are exceedingly interesting objects that allow us 
 to engage some of the key issues of physics today\, such as Dark Energ
 y and Cold Dark Matter (CDM).  Clusters are also natural places to lea
 rn about the origin and evolution of both galaxies and the large scale
  structure of the Universe.  I will describe how clusters can be a use
 d to address the nature of Dark Energy as well as what clusters alread
 y have to say about Dark Matter. <br>
\n<br>
\nBio: Mel Ulmer is a Fel
 low of the American Physical Society and of the Society of Photo-Optic
 al Instrumentation Engineers. He is a member of the American Astronomi
 cal Society\, the American Physical Society\, the International Astron
 omical Union\, and the Society of Photo-Optical Instrumentation Engine
 ers\, and the Royal Astronomical Society.  He has served on executive 
 councils for the high energy astrophysics divisions of both American A
 stronomical Society and the American Physical Society\, as well as sev
 eral NASA advisory and review panels. He has published over 250 articl
 es in journals and conference proceeding on topics including the study
  of binary X-ray sources\, pulsars\, and the large scale structure of 
 the Universe. He has also worked in areas of technology development an
 d has written papers on GaN-based films\, multilayer super-conducting 
 tunnel junctions\, X-ray mirror fabrication\, and light weight optical
  mirror fabrication. He received a B.A.in Physics from The Johns Hopki
 ns University ('65) and a Ph.D. in Physics (Bill Kraushaar advisor\, '
 70) from The Univ of Wisconsin-Madison. <br>
\n<br>
\n<a href="http://
 www.astro.northwestern.edu/~ulmer/">http://www.astro.northwestern.edu/
 ~ulmer/</a>
URL:https://www.physics.wisc.edu/events/?id=1205
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