Dark matter annihilation near a naked singularity

Details Dark matter annihilation near a naked singularity Dark matter annihilation near a naked singularity

2011-06-27

arxiv.org/abs/1106.5402v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 Pages, 3 figures

Scientific paper

We investigate here the dark matter annihilation near a Kerr naked singularity. We show that when dark matter particles collide and annihilate in vicinity of the singularity, the escape fraction to infinity of particles produced is much larger, at least 10^2 - 10^3 times the corresponding black hole values. As high energy collisions are generically possible near a naked singularity, this provides an excellent environment for efficient conversion of dark matter into ordinary standard model particles. If the center of galaxy harbored such a naked singularity, it follows that the observed emergent flux of particles with energy comparable to mass of the dark matter particles is much larger compared to the blackhole case, thus providing an intriguing observational test on the nature of the galactic center

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