Decaying dark matter: a stacking analysis of galaxy clusters to improve on current limits

Abstract

We show that a stacking approach to galaxy clusters can improve current limits on decaying dark matter by a factor $\gtrsim 5-100$, with respect to a single source analysis, for all-sky instruments such as Fermi-LAT. Based on the largest sample of X-ray-selected galaxy clusters available to date (the MCXC meta-catalogue), we provide all the astrophysical information, in particular the astrophysical term for decaying dark matter, required to perform an analysis with current instruments.

6 pages, 3 figures, supplementary file available on demand, accepted for publication in PRD

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Cited by in corpus (9)

• Spherical Jeans analysis for dark matter indirect detection in dwarf spheroidal galaxies - Impact of physical parameters and triaxiality
• Dark Matter Indirect Signatures
• gamma-rays from annihilating dark matter in galaxy clusters: stacking vs single source analysis
• Constraining the dark matter contribution of $\gamma$ rays in Cluster of galaxies using Fermi-LAT data
• Indirect Detection of eV Dark Matter via Infrared Spectroscopy
• Disentangling cosmic-ray and dark-matter induced gamma-rays in galaxy clusters?
• Neutron star mass in dark matter clumps
• Prospects for $\gamma$-ray observations of the Perseus galaxy cluster with the Cherenkov Telescope Array
• Classification of gamma-ray targets for velocity-dependent and subhalo-boosted dark-matter annihilation