WIMP annihilation in caustics

Details WIMP annihilation in caustics WIMP annihilation in caustics

2007-03-27

arxiv.org/abs/astro-ph/0703704v2

Phys.Rev.D75:123514,2007

Astronomy and Astrophysics

Astrophysics

12 pages, 4 figures, Minor changes - Expanded captions, added references, detection estimates given, accepted for publication

Scientific paper

10.1103/PhysRevD.75.123514

The continuous infall of dark matter with low velocity dispersion from all directions in a galactic halo leads to the formation of caustics which are very small scale ($\sim$parsec) high density structures. If the dark matter is made up of SUSY neutralinos, the annihilation of these particles produces a characteristic spectrum of gamma rays which in principle, could be detected. The annihilation signal at different energy bands is computed and compared with the expected gamma ray background.

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