Search for Dark Matter Annihilation Signals in the Galactic Center Halo with VERITAS

2023/09/21 by James L Ryan, Ryan, James L
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Atomic and Subatomic Physics Research #Radiation Detection and Scintillator Technologies

paper · pdf · doi:10.48550/arxiv.2309.12403

Abstract

Gamma-ray observations of the Galactic Center (GC) region provide some of the most sensitive measurements of annihilation signals from dark matter in the GeV-TeV mass range. We present the first results from 178 hours of VERITAS observations of a 2 degree region around the GC, taken between 2010 and 2022. The analysis uses a newly-developed template-based background method, as well as analysis techniques optimized for observations taken at large zenith angles. No significant excess is found in any region of interest considered. We derive model-independent limits on the dark matter thermally-averaged annihilation cross section which are among the strongest from any indirect detection experiment for TeV-scale masses.

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