Séminaire: Dark matter indirect detection in gamma-rays : status and prospects from dwarf spheroidal galaxies and galaxy clusters

par Dr Céline COMBET (LPSC-Grenoble)

vendredi 31 janv. 2014, 14:30 → 15:30 Europe/Paris

Amphi Recherche (Dept.Phys.)

The gamma-ray flux from dark matter annihilation has been flagged as a promising channel for indirect detection. I will first present results of the expected signal in the classical dwarf spheroidal galaxies of the Milky Way. An MCMC analysis of their kinematical data has allowed us to derive robust confidence levels regarding the astrophysical part of the signal, and to better constrain their detectability with present and future gamma-ray observatories. Galaxy clusters, as the largest bound DM structures in the universe, are also interesting targets for this channel and will be discussed in the second part of the talk. In particular, the expected boost from dark matter substructures and the prospects of a stacking approach will be presented.