<< November 2015 >>
Sun Mon Tue Wed Thu Fri Sat
 1   2   3   4   5   6   7 
 8   9   10   11   12   13   14 
 15   16   17   18   19   20   21 
 22   23   24   25   26   27   28 
 29   30   
Add an Event Edit This Event

Events at Physics

<< Summer 2015 Fall 2015 Spring 2016 >>
Subscribe to receive email announcements of events
Physics Department Colloquium
Dark Matter Annihilation in the Gamma-Ray Sky
Date: Friday, November 20th
Time: 3:30 pm
Place: 2241 Chamberlin Hall (Coffee & Cookies at 3:15pm)
Speaker: Dan Hooper, University of Chicago/Fermilab
Abstract: In many models, dark matter particles can undergo self-annihilation, generating gamma-rays and other high-energy particles. One 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 GeV gamma rays from the region surrounding the Galactic Center, consistent with the signal expected from annihilating dark matter. Recent improvements in the analysis techniques have found this excess to be robust and highly statistically significant, with a spectrum, angular distribution, and overall normalization that is in good agreement with that predicted by simple annihilating dark matter models. I will discuss the characteristics of this signal, and ways to test its origin. In particular, the dwarf galaxies recently discovered by DES provide a potently important tool to test a dark matter origin of the Galactic Center excess.
Host: Francis Halzen
Poster: https://www.physics.wisc.edu/events/posters/2015/3767.pdf
Add this event to your calendar

©2013 Board of Regents of the University of Wisconsin System