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WIMP annihilation in caustics

Aravind Natarajan
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Abstract

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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Aravind Natarajan. 2007-05-22. WIMP annihilation in caustics. https://doi.org/10.1103/physrevd.75.123514

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