Time-Dependent Models for Dark Matter at the Galactic Center

Details Time-Dependent Models for Dark Matter at the Galactic Center Time-Dependent Models for Dark Matter at the Galactic Center

2005-01-25

arxiv.org/abs/astro-ph/0501555v2

Phys.Rev.D72:103502,2005

Astronomy and Astrophysics

Astrophysics

Four pages

Scientific paper

10.1103/PhysRevD.72.103502

The prospects of indirect detection of dark matter at the galactic center depend sensitively on the mass profile within the inner parsec. We calculate the distribution of dark matter on sub-parsec scales by integrating the time-dependent Fokker-Planck equation, including the effects of self-annihilations, scattering of dark matter particles by stars, and capture in the supermassive black hole. We consider a variety of initial dark matter distributions, including models with very high densities ("spikes") near the black hole, and models with "adiabatic compression" of the baryons. The annihilation signal after 10 Gyr is found to be substantially reduced from its initial value, but in dark matter models with an initial spike, order-of-magnitude enhancements can persist compared with the rate in spike-free models, with important implications for indirect dark matter searches with GLAST and Air Cherenkov Telescopes like HESS and CANGAROO.

Affiliated with

Also associated with

No associations

Rating

Time-Dependent Models for Dark Matter at the Galactic Center does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time-Dependent Models for Dark Matter at the Galactic Center, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-Dependent Models for Dark Matter at the Galactic Center will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-512989