Jul 26 – 30, 2010
Montpellier 2 University
Europe/Paris timezone

Dark Matter Identification using Gamma Rays from Dwarf Galaxies

Jul 27, 2010, 11:00 AM
20m
Salle des Actes (Montpellier 2 University)

Salle des Actes

Montpellier 2 University

Place Eugene Bataillon, 34095 Montpellier Cedex 5 FRANCE
Talk Dark Matter Indirect Searches Parallel session : Indirect Searches 2

Speaker

Bibhushan Shakya (Cornell University)

Description

Satellite dwarf galaxies in the vicinity of the Milky Way are ideal candidates for the detection of dark matter annihilation signals. If the positron fraction and combined electron positron flux excesses recently observed by PAMELA and FERMI are due to dark matter annihilation, ground-based atmospheric cherenkov telescopes (ACTs) may be able to observe energetic gamma rays from the accompanying final state radiation from these dwarf galaxies. After discussing the prospects of detecting such signals with current and future ACTs, we investigate the possibility of using ACT observations of dwarf galaxies to distinguish between different dark matter models from the energy distribution of this final state radiation. We find that this can reliably be accomplished with next generation ACTs and, under favorable circumstances, might also be possible at existing instruments.

Primary authors

Bibhushan Shakya (Cornell University) Maxim Perelstein (Cornell University)

Presentation materials