Matthieu Vivier, for the VERITAS collaboration
In the cosmological paradigm, cold Dark Matter (DM) dominates the mass
content of the Universe and is present at every scale. Candidates for DM
include many extensions of the standard model, with a weakly interacting
massive particle (WIMP) in the mass range from 50 GeV to greater than 10 TeV.
The self-annihilation of WIMPs in astrophysical regions of high DM density can
produce secondary particles, including very high energy (VHE) gamma rays, with
energies up to the dark matter particle mass. The VERITAS array of Cherenkov
telescopes, designed for the detection of VHE gamma rays in the 100 GeV-10 TeV
energy range, is an appropriate instrument for the detection of DM and is
complementary to Fermi-LAT. Dwarf spheroidal galaxies (dSphs) of the Local
Group are potentially the best targets to search for the annihilation signature
of DM due to their proximity and large DM content. We report on the latest
VERITAS observations of dSphs and discuss the results in the framework of WIMP
models.
View original:
http://arxiv.org/abs/1110.6615
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