MeV Dark Matter: Has It Been Detected?
Céline BœhmDenys Wilkinson Laboratory, Astrophysics Department, Oxford University, OX1 3RH Oxford, United KingdomDan HooperDenys Wilkinson Laboratory, Astrophysics Department, Oxford University, OX1 3RH Oxford, United KingdomJoseph SilkDenys Wilkinson Laboratory, Astrophysics Department, Oxford University, OX1 3RH Oxford, United KingdomMichel CasséDAPNIA/Service d’Astrophysique, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, FranceJacques PaulDAPNIA/Service d’Astrophysique, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France
2004en
ABI
Annotatsiya
We discuss the possibility that the recent detection of 511 keV gamma rays from the galactic bulge, as observed by INTEGRAL, is a consequence of low mass (1-100 MeV) particle dark matter annihilations. We discuss the type of halo profile favored by the observations as well as the size of the annihilation cross section needed to account for the signal. We find that such a scenario is consistent with the observed dark matter relic density and other constraints from astrophysics and particle physics.
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