Is the gamma-ray emission around the Coma galaxy cluster a dark matter origin?
arXiv:1801.01645
Abstract
Recently, gamma-ray emission in the direction of Coma, with a TS value of , has been reported. In this work we will discuss the possibility of such a residual emission coming from dark matter annihilation. Our results show that the gamma-ray emission within the Coma region is also spatially correlated to the mass distribution derived from weak gravitational lensing measurements very well. However the dark matter models are not supported by the spectral analysis results and constraints by observations of other targets. Thus we derive the upper limits of the dark matter annihilation cross section according to the observation of the Coma region.
arXiv comment8 pages, 4 figures, comments are welcome
References in corpus (32)
- Particle Dark Matter: Evidence, Candidates and Constraints
- The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
- The Aquarius Project: the subhalos of galactic halos
- Fermi Large Area Telescope First Source Catalog
- Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
- The Mass Function of an X-Ray Flux-Limited Sample of Galaxy Clusters
- Clumps and streams in the local dark matter distribution
- The DArk Matter Particle Explorer mission
- Statistics of X-ray observables for the cooling-core and non-cooling core galaxy clusters
- The flattening of the concentration-mass relation towards low halo masses and its implications for the annihilation signal boost
- Constraints on Dark Matter Annihilation in Clusters of Galaxies with the Fermi Large Area Telescope
- Characterization of subhalo structural properties and implications for dark matter annihilation signals
- Diffuse Radio Emission in/around the Coma Cluster: Beyond Simple Accretion
- Search for cosmic-ray induced gamma-ray emission in Galaxy Clusters
- GeV Gamma-ray Flux Upper Limits from Clusters of Galaxies
- Search for gamma-ray emission from the Coma Cluster with six years of Fermi-LAT data
- Probing Dark Matter Decay and Annihilation with Fermi LAT Observations of Nearby Galaxy Clusters
- Probing the origin of giant radio halos through radio and gamma-ray data : the case of the Coma cluster
- Subaru Weak-Lensing Survey of Dark Matter Subhalos in the Coma Cluster : Subhalo Mass Function and Statistical Properties
- Constraining Extended Gamma-ray Emission from Galaxy Clusters
- Evidence for extended gamma-ray emission from galaxy clusters
- Search for extended gamma-ray emission from the Virgo galaxy cluster with Fermi-LAT
- Constraints on diffuse gamma-ray emission from structure formation processes in the Coma cluster
- A Search for Dark Matter Annihilation in Galaxy Groups
- Search for a gamma-ray line feature from a group of nearby Galaxy clusters with Fermi LAT Pass 8 data
- Cross-correlating the gamma-ray sky with catalogs of galaxy clusters
- Mapping Extragalactic Dark Matter Annihilation with Galaxy Surveys: A Systematic Study of Stacked Group Searches
- Search for Gamma-Ray Lines towards Galaxy Clusters with the Fermi-LAT
- Gamma rays and neutrinos from dark matter annihilation in galaxy clusters
- Detection of virial shocks in stacked Fermi-LAT clusters
- X-ray to gamma-ray virial shock signal from the Coma cluster
- Interpretations of the possible 42.7 GeV -ray line