Probing the nature of dark matter with gamma rays: status of the Fermi LAT searches and prospects for the CTA
Tuesday 25 April 2017
to 14:30 at
Gabrijela Zaharijas (University of Nova Gorica and ICTP-Trieste)
High-energy gamma rays are one of the most promising tools to constrain or reveal the nature of Dark Matter (DM). During the almost nine years of the Fermi satellite mission, the data from its Large Area Telescope (LAT) were used to set constraints on Weakly Interacting Massive Particles (WIMP) models as well as to perform various searches for new physics. As a result, current WIMP annihilation cross section limits cut well into the theoretically-motivated region of parameter space for WIMP masses below 100 GeV. At the same time, the Cherenkov Telescope Array (CTA) is entering the construction phase and will soon offer a chance to probe a complementary parameter space of heavier dark matter (from O(200 GeV) up to several tens of TeV), with unprecedented sensitivity.
In this talk I will describe methods used to search for evidence of dark matter with the LAT, and review the status of the searches. I will discuss projections of the expected sensitivities with continued LAT data taking, together with the latest sensitivity predictions on the various targets with CTA.
[Host: Miguel Sánchez-Conde]