Dark matter annihilation in the vicinity of a black hole

Details Dark matter annihilation in the vicinity of a black hole Dark matter annihilation in the vicinity of a black hole

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1206..277b&link_type=abstract

ASTROPHYSICS AND COSMOLOGY AFTER GAMOW: Proceedings of the 4th Gamow International Conference on Astrophysics and Cosmology Afte

Physics

High Energy Physics

Dark Matter, Gravitation, Black Holes, Gamma-Rays, Dark Matter, Gravitational Fields, Galactic Nuclei, Circumnuclear Matter, And Bulges, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

We consider dark matter annihilation in the gravitational field of a black hole. We obtain exact distribution function of the infalling dark matter particles, and compute the resulting flux and spectra of gamma rays coming from the objects. It is shown that the dark matter density significantly increases near a black hole. Particle collision energy becomes very high affecting relative cross-sections of various annihilation channels. We also discuss possible experimental consequences of these effects.

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