Dark matter line search using a joint analysis of dwarf galaxies with the Fermi Gamma-ray Space Telescope
arXiv:1206.0796 · doi:10.1103/PhysRevD.86.021302
Abstract
We perform a joint analysis of dwarf galaxy data from the Fermi Gamma-ray Space Telescope in search of dark matter annihilation into a gamma-ray line. We employ a novel statistical method that takes into account the spatial and spectral information of individual photon events from a sample of seven dwarf galaxies. Dwarf galaxies show no evidence of a gamma-ray line between 10 GeV and 1 TeV. The subsequent upper limit on the annihilation cross section to a two-photon final state is 3.9(+7.1)(-3.7) x 10^-26 cm^3/s at 130 GeV, where the errors reflect the systematic uncertainty in the distribution of dark matter within the dwarf galaxies.
5 pages, 3 figures. Replaced with version accepted for publication as a Rapid Communication in PRD
References in corpus (8)
- New Gamma-Ray Contributions to Supersymmetric Dark Matter Annihilation
- Precise constraints on the dark matter content of Milky Way dwarf galaxies for gamma-ray experiments
- The Most Dark Matter Dominated Galaxies: Predicted Gamma-ray Signals from the Faintest Milky Way Dwarfs
- Indirect Dark Matter Detection from Dwarf Satellites: Joint Expectations from Astrophysics and Supersymmetry
- H.E.S.S. constraints on Dark Matter annihilations towards the Sculptor and Carina Dwarf Galaxies
- Indirect Dark Matter Detection Limits from the Ultra-Faint Milky Way Satellite Segue 1
- Dark matter in the classical dwarf spheroidal galaxies: a robust constraint on the astrophysical factor for gamma-ray flux calculations
- Constraining Dark Matter in Galactic Substructure
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