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HEP Seminar: The Characterization of the Gamma-Ray Signal from the Central Milky Way: A Compelling Case for Annihilating Dark Matter

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Tim Linden, University of Chicago
When
24 September 2014 from 2:30 PM to 3:30 PM
Where
339 Davey Laboratory
Contact Name
Contact Phone
(814) 865-4306
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In scenarios where dark matter particles can annihilate to

produce standard model particles, the galactic center of the Milky Way

is expected to provide the highest flux from dark matter in the sky.

This has allowed galactic center observations to set extremely

stringent limits on the parameters of the dark matter particle.

Recently, we have worked on gamma-ray observations from the Fermi-LAT

telescope, and have detected a significant extended excess, which is

spherically symmetric around the position of the galactic center, and

does not trace any known astrophysical emission profile. In this talk,

I will summarize the current status of these observations and discuss

dark matter and astrophysical interpretations of the data. I will show

forthcoming results which strongly constrain the properties and the

possible interpretations of the observed excess. Finally, I will posit

upcoming tests which will strongly suggest, or rule out, a dark matter

interpretation.

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