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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3538
DTSTART:20150508T210000Z
DTEND:20150508T220000Z
DTSTAMP:20260419T124604Z
LAST-MODIFIED:20150508T180307Z
LOCATION:2241 Chamberlin Hall (coffee at 3:30 pm)
SUMMARY:Where Did Half the Starlight in the Universe Go?\, Physics Dep
 artment Colloquium\, Mark Devlin\, University of Pennsylvania
DESCRIPTION:We believe that approximately half of all the light from s
 tars is absorbed and reprocessed by dust. The resulting emission is gr
 ey body with a temperature near 30 Kelvin. The COBE satellite made the
  first measurements of the resulting Far Infrared Background (FIRB)\, 
 but since that time\, we have been unable to resolve the background in
 to individual galaxies. The Balloon-borne Large Aperture Submillimeter
  Telescope (BLAST) was designed to do this job. Its three bands at 250
 \, 350\, and 500 microns span the peak in emission for galaxies at z=1
 . I will discuss the BLAST experiment and present results from our mea
 surements of resolved and unresolved galaxies.   I will also discuss t
 he implications for star formation in our own galaxy and how dust is c
 hanging the way we look at current and future searches for primordial 
 gravity waves with the Cosmic Microwave Background.
URL:https://www.physics.wisc.edu/events/?id=3538
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