Robust Identification of Isotropic Diffuse Gamma Rays from Galactic Dark Matter
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Publisher:American Physical Society
Citation:Jennifer M. Siegal-Gaskins, Vasiliki Pavlidou, "Robust Identification of Isotropic Diffuse Gamma Rays from Galactic Dark Matter," Physical Review Letters 102, no. 24 (2009), doi:10.1103/PhysRevLett.102.241301
Dark matter annihilation in Galactic substructure will produce diffuse gamma-ray emission of remarkably constant intensity across the sky, making it difficult to disentangle this Galactic dark matter signal from the extragalactic gamma-ray background. We show that if Galactic dark matter contributes a modest fraction of the measured emission in an energy range accessible to the Fermi Gamma-ray Space Telescope, the energy dependence of the angular power spectrum of the total measured emission could be used to confidently identify gamma rays from Galactic dark matter substructure.
Rights:©2009 The American Physical Society
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