Phys. Rev. Lett. 94, 171302 (2005) [4 pages]Supersymmetric Dark Matter and the Extragalactic Gamma Ray BackgroundReceived 12 May 2004; revised 9 December 2004; published 5 May 2005 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 mχ=515-75+110 GeV (systematic errors ∼30%). © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.171302
DOI:
10.1103/PhysRevLett.94.171302
PACS:
95.35.+d, 12.60.Jv, 98.70.Rz, 98.80.Cq
See AlsoComment: W. de Boer, C. Sander, V. Zhukov, A. V. Gladyshev, and D. I. Kazakov, EGRET Excess of Diffuse Galactic Gamma Rays Interpreted as a Signal of Dark Matter Annihilation, Phys. Rev. Lett. 95, 209001 (2005). |
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