Searches for dark matter subhaloes with wide-field Cherenkov telescope surveys

Details Searches for dark matter subhaloes with wide-field Cherenkov telescope surveys Searches for dark matter subhaloes with wide-field Cherenkov telescope surveys

2010-12-21

arxiv.org/abs/1012.4766v2

Phys.Rev.D83:015003,2011

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

9 pages, 8 figures, v2: minor corrections, matches accepted version in PRD

Scientific paper

10.1103/PhysRevD.83.015003

The presence of substructures in dark matter haloes is an unavoidable consequence of the cold dark matter paradigm. Indirect signals from these objects have been extensively searched for with cosmic rays and gamma-rays. At first sight, Cherenkov telescopes seem not very well suited for such searches, due to their small fields of view and the random nature of the possible dark matter substructure positions in the sky. However, with long enough exposure and an adequate observation strategy, the very good sensitivity of this experimental technique allows us to constrain particle dark matter models. We confront here the sensitivity map of the HESS experiment built out of their Galactic scan survey to the state-of-the-art cosmological N-body simulation Via Lactea II. We obtain competitive constraints on the annihilation cross section, at the level of 10^-24 -10^-23 cm^3s^-1. The results are extrapolated to the future Cherenkov Telescope Array, in the cases of a Galactic plane survey and of an even wider extragalactic survey. In the latter case, it is shown that the sensitivity of the Cherenkov Telescope Array will be sufficient to reach the most natural particle dark matter models.

Affiliated with

Also associated with

No associations

Rating

Searches for dark matter subhaloes with wide-field Cherenkov telescope surveys 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 Searches for dark matter subhaloes with wide-field Cherenkov telescope surveys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Searches for dark matter subhaloes with wide-field Cherenkov telescope surveys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-96747