Spectral Gamma-Ray Signatures of Cosmological Dark Matter Annihilations
Spectral Gamma-Ray Signatures of Cosmological Dark Matter Annihilations
We propose a new signature for weakly interacting massive particle (WIMP) dark matter, a spectral feature in the diffuse extragalactic gamma-ray radiation. This feature, a sudden drop of the gamma-ray intensity at an energy corresponding to the WIMP mass, comes from the asymmetric distortion of the line due to WIMP …