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The 2009 Fermi Symposium

Using Anisotropy To Identify A Dark Matter Signal In Diffuse Gamma-Ray Emission With Fermi

Jennifer M. Siegal-Gaskins


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. Recent studies have considered the angular power spectrum of the diffuse emission from various extragalactic source classes and from Galactic dark matter. I will discuss these results and show how the energy dependence of anisotropies in the total measured diffuse emission could be used to confidently identify a signal from dark matter in Fermi data.