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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:11090108  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Dark Matter Annihilation: From High Redshift to the Galactic Center
Speaker(s): Doug Finkbeiner
Abstract: The existence of dark matter is hardly in doubt, yet astrophysicists continue to search in vain for any non-gravitational signals of it. In the case of weakly interacting massive particle (WIMP) models, ongoing annihilation or decay of WIMPs to Standard Model particles could provide observable signals, e.g. as excess gamma rays in the center of the Milky Way or as excess ionization at high redshift. I will present our latest results on the most rigorous constraint from astrophysics: the effect of WIMP annihilation on the ionization history of the Universe, as recorded in the CMB.
Date: 22/09/2011 - 9:40 am
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