Strong constraints on thermal relic dark matter from Fermi-LAT observations of the Galactic Center

20 Aug 2020 Abazajian Kevork N. Horiuchi Shunsaku Kaplinghat Manoj Keeley Ryan E. Macias Oscar

The extended excess toward the Galactic Center (GC) in gamma rays inferred from Fermi-LAT observations has been interpreted as being due to dark matter (DM) annihilation. Here, we perform new likelihood analyses of the GC and show that, when including templates for the stellar galactic and nuclear bulges, the GC shows no significant detection of a DM annihilation template, even after generous variations in the Galactic diffuse emission models and a wide range of DM halo profiles... (read more)

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  • HIGH ENERGY PHYSICS - PHENOMENOLOGY
  • COSMOLOGY AND NONGALACTIC ASTROPHYSICS
  • HIGH ENERGY ASTROPHYSICAL PHENOMENA