Cosmic ray protons scattering off dark matter produce the Galactic Center gamma-ray excess through inelastic up-scattering followed by decay or direct elastic 2-to-3 photon production.
Astrophys.J. 757 (2012) 123 [arXiv:1208.0676]. [577]H.E.S.S.Collaboration,\H.E.S.S. observations of the globular clusters NGC 6388 and M 15 and search for a Dark Matter signal
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An optimized Fermi-LAT analysis finds the Galactic Center Excess follows an approximately spherical generalized NFW morphology with inner slope ~1.15, a spectrum peaking at a few GeV, and only upper limits above tens of GeV.
A review summarizing current observational, experimental, and theoretical results on dark matter.
citing papers explorer
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Producing the GeV Galactic Center Excess via Cosmic Ray-Dark Matter Scattering
Cosmic ray protons scattering off dark matter produce the Galactic Center gamma-ray excess through inelastic up-scattering followed by decay or direct elastic 2-to-3 photon production.
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A Precise Measurement of the Fermi-LAT Galactic Center Excess Morphology and Spectrum
An optimized Fermi-LAT analysis finds the Galactic Center Excess follows an approximately spherical generalized NFW morphology with inner slope ~1.15, a spectrum peaking at a few GeV, and only upper limits above tens of GeV.
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Dark Matter
A review summarizing current observational, experimental, and theoretical results on dark matter.