MeV Dark Matter: Has It Been Detected?

Details MeV Dark Matter: Has It Been Detected? MeV Dark Matter: Has It Been Detected?

2003-09-25

arxiv.org/abs/astro-ph/0309686v3

Phys.Rev.Lett.92:101301,2004

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.92.101301

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 (~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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