Search for GeV gamma-ray emission from SPT-CL J2012-5649 with six years of DAMPE data

Abstract

We search for gamma-ray emission from the galaxy cluster SPT-CL J2012-5649 in the energy range from 3 GeV to 1 TeV using the DArk Matter Particle Explorer (DAMPE) telescope. For our analysis, we use three different templates: point source, radial disk, and radial Gaussian. We do not detect a signal with significance $>3\sigma$ for any of these templates at any location within $R_{200}$ of the cluster center. We obtain 95\% C.L. upper limit on the energy flux ranging between $\sim 10^{-6}$ and $10^{-4}\mathrm{MeV}\mathrm{c}{\mathrm{m}}^{-2}{\mathrm{s}}^{-1}$ depending on the energy range. These upper limits are consistent with a previously reported non-zero flux detected by Fermi-LAT at $6\sigma$ significance. This work represents the first proof of principle search for gamma-ray emission from a single galaxy cluster using DAMPE data.

12 pages, 4 figures. Accepted for publication in JHEAP

References in corpus (8)

• Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-square-degree SPT-SZ survey
• Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons
• The DArk Matter Particle Explorer mission
• The on-orbit calibration of DArk Matter Particle Explorer
• Galaxy Clusters as Reservoirs of Heavy Dark Matter and High-Energy Cosmic Rays: Constraints from Neutrino Observations
• Impact of Galaxy Clusters on UHECR propagation
• Search for gamma-ray line signals around the black hole at the galactic center with DAMPE observation
• A pilot search for MeV gamma-ray emission from five galaxy clusters using archival COMPTEL data