Upper limits on the WIMP annihilation cross section from a joint analysis of dSph observations with the MAGIC telescopes

Discussion timeslot (ZOOM-Meeting): 16. July 2021 - 18:00
ZOOM-Meeting URL: https://icrc2021.desy.de/pf_access_abstracts
Corresponding Session: https://icrc2021-venue.desy.de/channel/Presenter-Forum-1-Evening-All-Categories/48
Abstract:
'Dwarf spheroidal satellite galaxies (dSphs) are among the best candidates to perform indirect search for DM, having the highest known mass-to-light ratio and being free of gamma-ray emitting sources. The Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes, located on the Canary Island of La Palma, have observed a fair amount of optimal dSphs in the recent years. This is the outcome of diversifying the observation strategy in order to avoid possible biases in target selection and to improve previous results.rnIn this contribution we will report on new MAGIC results obtained from 52 hours of observation of the Draco dSph in 2018 and 50 hours of the Coma Berenices dSph in 2019. We will also present the results of a joint analysis of Draco and Coma Berenices dSphs with other dSphs observed by MAGIC so far. The selected dataset accounts for 355 hours of good quality data, resulting in one of the largest dSphs samples ever collected by an array of Cherenkov telescopes. This allows us to derive the most constraining limits, among Cherenkov telescopes, on the WIMP annihilation cross section for different annihilation channels in the WIMP mass range 70 GeV to 100 TeV.'

Authors: Camilla Maggio | Daniel Kerszberg | Daniele Ninci
Co-Authors: Vincenzo Vitale | For the MAGIC Collaboration
Collaboration: MAGIC

Indico-ID: 292
Proceeding URL: https://pos.sissa.it/395/512