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Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - GRD - Gamma Ray Direct
Search for a gamma-ray line feature with DAMPE
Z. Shen,* Y.F. Liang, K.K. Duan, X. Li, Y.Z. Fan
*corresponding author
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Pre-published on: 2019 October 25
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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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