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arXiv · 0901.3776

Robust identification of isotropic diffuse gamma rays from Galactic dark matter

Jennifer M. Siegal-Gaskins·Vasiliki Pavlidou
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Abstract

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.

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Jennifer M. Siegal-Gaskins, Vasiliki Pavlidou. 2009-01-23. Robust identification of isotropic diffuse gamma rays from Galactic dark matter. https://doi.org/10.1103/physrevlett.102.241301

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