Search for a gamma-ray line feature with DAMPE
October 25, 2019
July 02, 2021
DArk Matter Particle Explorer (DAMPE) measures the gamma rays with an excellent energy resolution. Therefore, DAMPE is suitable for the search of gamma-ray line emission that could arise from dark matter annihilation or decay. We have analyzed the Galactic center and nearby galaxy clusters with 3 years of DAMPE data. No statistically significant line is identified between 10 GeV and 300 GeV and we present the 95% confidence limits of the velocity-averaged cross section for dark matter particle annihilation into a pair of gamma rays.
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