Supersymmetric Dark Matter and the Extragalactic Gamma Ray Background

Details Supersymmetric Dark Matter and the Extragalactic Gamma Ray Background Supersymmetric Dark Matter and the Extragalactic Gamma Ray Background

2004-05-12

arxiv.org/abs/astro-ph/0405235v3

Phys.Rev.Lett. 94 (2005) 171302

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures; accepted by Physical Review Letters; replaced with accepted version

Scientific paper

10.1103/PhysRevLett.94.171302

We trace the origin of the newly determined extragalactic gamma ray background from EGRET data to an unresolved population of blazars and neutralino annihilation in cold dark matter halos. Using results of high-resolution simulations of cosmic structure formation, we calculate composite spectra and compare with the EGRET data. The resulting best-fit value for the neutralino mass is m_chi = (515 +/- 110/75) GeV (systematic errors \~30%).

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