On Dark Matter Annihilation in the Local Group

Details On Dark Matter Annihilation in the Local Group On Dark Matter Annihilation in the Local Group

2003-07-10

arxiv.org/abs/astro-ph/0307209v2

Phys.Rev.D69:043512,2004

Astronomy and Astrophysics

Astrophysics

11 pages, 10 figures. Accepted for publication in Phys. Rev. D.; added a new paragraph on the detectability of Galactic sub-ha

Scientific paper

10.1103/PhysRevD.69.043512

Under the hypothesis of a Dark Matter composed by supersymmetric particles like neutralinos, we investigate the possibility that their annihilation in the haloes of nearby galaxies could produce detectable fluxes of $\gamma$-photons. Expected fluxes depend on several, poorly known quantities such as the density profiles of Dark Matter haloes, the existence and prominence of central density cusps and the presence of a population of sub-haloes. We find that, for all reasonable choices of Dark Matter halo models, the intensity of the $\gamma$-ray flux from some of the nearest extragalactic objects, like M31, is comparable or higher than the diffuse Galactic foreground. We show that next generation ground-based experiments could have the sensitivity to reveal such fluxes which could help us unveiling the nature of Dark Matter particles.

Affiliated with

Also associated with

No associations

Rating

On Dark Matter Annihilation in the Local Group 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 On Dark Matter Annihilation in the Local Group, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On Dark Matter Annihilation in the Local Group will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-136983