Göttingen 2012 – scientific programme
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T: Fachverband Teilchenphysik
T 92: Gammaastronomie 4
T 92.9: Talk
Thursday, March 1, 2012, 18:45–19:00, ZHG 008
Probing The Dark Matter Halo With the Future CTA Observatory — •Emrah Birsin1, 3, Constanze Jahn2, Ullrich Schwanke1, and Gerrit Spengler1 — 1Institut für Physik, Humboldt-Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany — 2Physikalisches Institut der Friedrich-Alexander Universität Erlangen-Nürnberg Erwin-Rommel-Str. 1, Büro 312 D-91058 Erlangen — 3for the CTA consortium.
Weakly Interacting Massive Particles (WIMPs) are well motivated candidates for Dark Matter (DM) which was produced thermally in the Big Bang. For WIMPs with masses of more than 100 GeV photons from DM annihilation could be observable with Cherenkov telescopes. The currently most constraining limits were derived from observations with the H.E.S.S. array of Cherenkov telescopes when targeting the Milky Way halo in the vicinity of the Galactic Center region. These observations exclude values of the velocity averaged annihilation cross section bigger than few 10−25 cm−3 s−1, a value one order of magnitude larger than the annihilation cross-sections expected in extensions to the Standard Model of particle physics. The improved sensitivity of the next-generation gamma-ray observatory Cherenkov Telescope Array (CTA) will allow to further probe the WIMP parameter space. The contribution presents estimates of the sensitivity of a DM search in the galactic halo with CTA.