Supersymmetric Dark Matter and the Extragalactic Gamma Ray Background

2004/05/31 by Dominik Elsässer, Dominik Elsaesser, K. Mannheim +1 · 2 citations
Physics and Astronomy · #Anisotropy #Annihilation #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Blazar #CMB cold spot #Cold dark matter #Cosmic microwave background #Cosmic ray #Cosmology #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Egret #Gamma ray #Neutralino #Particle physics #Particle physics theoretical and experimental studies #Physics #Population #Scalar field dark matter #Weakly interacting massive particles #astro-ph #hep-ph

paper · pdf · doi:10.1103/physrevlett.94.171302

published as Phys.Rev.Lett. 94 (2005) 171302 · 4 pages, 3 figures; accepted by Physical Review Letters; replaced with accepted version

arxiv created 2005/04/06 · openalex publication_date 2005/05/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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 approximately 30%).

Citations

• Measurement of Low-Energy Cosmic-Ray Antiprotons at Solar Minimum
• Can Dark Matter Annihilation Dominate the Extragalactic Gamma-Ray Background?
• The Power Spectrum of Mass Fluctuations Measured from the Lyα Forest at Redshiftz = 2.5
• On gamma-ray astronomy
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results
• Evidence for a Galactic gamma-ray halo
• MeV Dark Matter: Has It Been Detected?

Cited by

• Astrophysics in 2005
• Dark matter and gamma rays from Draco: MAGIC, GLAST and CACTUS