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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3767
DTSTART:20151120T213000Z
DTEND:20151120T223000Z
DTSTAMP:20260419T110544Z
LAST-MODIFIED:20151008T141935Z
LOCATION:2241 Chamberlin Hall (Coffee & Cookies at 3:15pm)
SUMMARY:Dark Matter Annihilation in the Gamma-Ray Sky\, Physics Depart
 ment Colloquium\, Dan Hooper\, University of Chicago/Fermilab
DESCRIPTION:In many models\, dark matter particles can undergo self-an
 nihilation\, generating gamma-rays and other high-energy particles. On
 e of the missions of the Fermi Gamma-Ray Space Telescope is to search 
 for these annihilation products. Over the past several years\, Fermi's
  data has been shown to contain a spatially extended excess of ~1-3 Ge
 V gamma rays from the region surrounding the Galactic Center\, consist
 ent with the signal expected from annihilating dark matter. Recent imp
 rovements in the analysis techniques have found this excess to be robu
 st and highly statistically significant\, with a spectrum\, angular di
 stribution\, and overall normalization that is in good agreement with 
 that predicted by simple annihilating dark matter models. I will discu
 ss the characteristics of this signal\, and ways to test its origin. I
 n particular\, the dwarf galaxies recently discovered by DES provide a
  potently important tool to test a dark matter origin of the Galactic 
 Center excess.<br>
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URL:https://www.physics.wisc.edu/events/?id=3767
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