Matt Kistler homepage. Matthew Kistler Dark Matter Might Decay... Just Not Today!
Does dark matter decay into gamma-rays?
Dark matter, true to its name, still evades detection except through the most indirect observations, which reveal little concerning its particle nature. Many theories predict dark matter candidates, over a wide range of masses, that may be decaying today, producing a significant flux of gamma rays. In this work with Hasan Yuksel, we place model-independent constraints on late decaying dark matter using gamma-ray line emission limits from the Galactic Center region from the INTEGRAL satellite, and measurements of the isotropic diffuse photon background (iDPB). We show that very little of the unexplained MeV background can be produced by dark matter decays either in the Milky Way’s halo or cosmologically.
