23-28 June 2014
Amsterdam
Europe/Zurich timezone

Fingerprints of Dark Matter in the gamma-ray sky (?)

23 Jun 2014, 17:10
25m
Room 6 (Tuschinski Theatre)

Room 6

Tuschinski Theatre

Presentation Dark Matter Indirect Detection Dark Matter: Indirect Detection

Speaker

Dr Alfredo Urbano (SISSA)

Description

The quest for Dark Matter signals in the gamma-ray sky is one of the most intriguing and exciting challenges in astrophysics. In this talk I will discuss the energy spectrum of the Fermi bubbles at different latitudes, making use of the gamma-ray data collected by the Fermi Large Area Telescope. At high latitude, $|b|=20^{\circ}-50^{\circ}$, the Fermi bubbles energy spectrum can be reproduced by gamma-ray photons generated by inverse Compton scattering processes, assuming the existence of a population of high-energy electrons. At low latitude, $|b|=10^{\circ}-20^{\circ}$, the presence of a bump at $E_{\gamma}\sim 1-4$ GeV, reveals the existence of an extra component compatible with Dark Matter annihilation.

Primary author

Dr Alfredo Urbano (SISSA)

Co-authors

Dr Wei Xue (SISSA) Dr Wei-Chih Huang (UCL)

Presentation Materials