Search for a gamma-ray line feature with DAMPE
Z.Q. Shen*, Y.F. Liang, K.K. Duan, X. Li, Y.Z. Fan on behalf of the DAMPE Collaboration
Pre-published on:
October 25, 2019
Published on:
July 02, 2021
Abstract
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.
DOI: https://doi.org/10.22323/1.358.0601
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