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titolo
Seminario
target
totem,dipartimento,ppim
inizio
Giovedì 11 Ottobre 2018 ore 14:00
luogo
Sala Riunioni 3o piano edificio di via Pascoli
relatore
Aldo Morselli INFN Roma Tor Vergata - Gonzalo Rodriguez Fernandez INFN Roma Tor Vergata
titoloevento
Search for gamma-ray Part 1: Introduction Part 2 : A specific study case: Spheroidal galaxies
abstract
The nature of dark matter (DM) is a longstanding enigma of physics; it may consist of particles beyond the Standard Model that are still elusive to experiments.
Indirect DM searches with the Fermi Gamma-ray Space Telescope and Imaging Atmospheric Cherenkov Telescopes (IACTs) are playing a crucial role in constraining the nature of the DM particle through the study of their annihilation into gamma rays from different astrophysical structures.
The Cherenkov Telescope Array (CTA) is the next generation ground-based gamma-ray observatory. It will serve as an open observatory to a wide astrophysics community and will provide a deep insight into the non-thermal high-energy universe.
The design foresees a factor of 5-10 improvement in sensitivity in the current very high energy gamma ray domain of about 100 GeV to some 10 TeV, and an extension of the accessible energy range from 30 GeV to above 100 TeV
In this double talk we will describe the sensitivity projections for DM searches on the various targets taking into account the latest instrument response functions expected for CTA together with estimations for the systematic uncertainties from diffuse astrophysical and cosmic-ray backgrounds and a description of the tools that can be used to perform such analysisIn this talk I will present two applications on this technology to unveil patterns in gamma-ray data. First the texture of the GeV Galactic Center Excess (GCE), then a possible implementation in CTA to discriminate between gamma-rays and hadronic showers.