2023/08/29 by Fei Xu, Dan Hooper, Xu, Fei +1
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE)
paper · pdf · doi:10.48550/arxiv.2308.15538
openalex publication_date 2023/08/29 · openalex created_date 2023/09/02 · openalex updated_date 2026/07/28
Gamma-ray observations of Milky Way dwarf galaxies have been used to place stringent constraints on the dark matter's annihilation cross section. In this paper, we evaluate the sensitivity of the proposed Advanced Particle-astrophysics Telescope (APT) to dark matter in these systems, finding that such an instrument would be capable of constraining thermal relics with masses as large as mX∼ 600 \rm GeV. Furthermore, in dark matter scenarios motivated by the observed Galactic Center Gamma-Ray Excess, we predict that APT would detect several dwarf galaxies with high-significance. Such observations could be used to test the predicted proportionality between the gamma-ray fluxes and J-factors of individual dwarf galaxies, providing us with an unambiguous test of the origin of the Galactic Center Excess.