Dark Matter Profile in the Galactic Center
Astrophysics
2009-11-10 v2
Abstract
We describe a quasi-equilibrium profile of dark matter particles in the inner parsec of the Galaxy, rho ~ r^-3/2. This "mini-cusp" profile is caused by scattering with the dense stellar cluster around the supermassive black hole in Sgr A* and is independent of the initial conditions. The implications for detection of gamma rays from WIMP dark matter annihilation in the Galactic center are a mild enhancement of the flux, and a characteristic central feature in the angular distribution which could be detectable by high-resolution Atmospheric Cherenkov Telescopes.
Cite
@article{arxiv.astro-ph/0308385,
title = {Dark Matter Profile in the Galactic Center},
author = {Oleg Y. Gnedin and Joel R. Primack},
journal= {arXiv preprint arXiv:astro-ph/0308385},
year = {2009}
}
Comments
4 pages, Physical Review Letters, matches printed version