Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Dark Matter Physics (DM)
An indirect search for Dark Matter with a combined analysis of dwarf spheroidal galaxies from VERITAS
C. McGrath*  on behalf of the VERITAS Collaboration
*: corresponding author
Full text: pdf
Pre-published on: July 25, 2023
Published on: September 27, 2024
Abstract
Understanding the nature and identity of dark matter (DM) is a key goal in the physics community.
Certain DM theories suggest that weakly interacting massive particles (WIMPs) may decay or
annihilate into standard model particles with electromagnetic radiation up to very-high-energy
(VHE) gamma-rays (greater than 100 GeV) produced in the process. The Very Energetic Radiation
Imaging Telescope Array System (VERITAS) is an array of four imaging atmospheric Cherenkov
telescopes (IACTs) that can indirectly detect VHE gamma rays in an energy range of 100 GeV to
> 30 TeV. Dwarf spheroidal galaxies (dSphs) are ideal candidates in the search for WIMP DM
due to their high dark matter content and their low gamma-ray fluxes from other processes. In
comparison to the previous published VERITAS DM searches, this study uses a significantly larger
dataset and employs improved analysis methods. In this contribution the results of the analysis of
the extended VERITAS dSph data set and the resulting upper limits on the DM velocity-weighted
cross section will be shown.
DOI: https://doi.org/10.22323/1.444.1395
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