Dark matter identification with gamma rays from dwarf galaxies

@article{Perelstein2010DarkMI,
  title={Dark matter identification with gamma rays from dwarf galaxies},
  author={Maxim Perelstein and Bibhushan Shakya},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2010},
  volume={2010},
  pages={016-016}
}
If the positron fraction and combined electron-positron flux excesses recently observed by PAMELA, Fermi and HESS are due to dark matter annihilation into lepton-rich final states, the accompanying final state radiation (FSR) photons may be detected by ground-based atmospheric Cherenkov telescopes (ACTs). Satellite dwarf galaxies in the vicinity of the Milky Way are particularly promising targets for this search. We find that current and near-future ACTs have an excellent potential for… Expand
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References

SHOWING 1-10 OF 104 REFERENCES
Dark Matter Interpretations of the Electron/Positron Excesses after FERMI
The cosmic-ray excess observed by PAMELA in the positron fraction and by FERMI and HESS in the electron + positron flux can be interpreted in terms of DM annihilations or decays into leptonic finalExpand
Indirect Dark Matter Detection from Dwarf Satellites: Joint Expectations from Astrophysics and Supersymmetry
We present a general methodology for determining the gamma-ray flux from annihilation of dark matter particles in Milky Way satellite galaxies, focusing on two promising satellites as examples: SegueExpand
Constraining Dark Matter Properties with Gamma-Rays from the Galactic Center with Fermi-LAT
Abstract We study the capabilities of the Fermi–LAT instrument on board of the Fermi mission to constrain particle dark matter properties, as annihilation cross section, mass and branching ratio intoExpand
OBSERVATIONS OF MILKY WAY DWARF SPHEROIDAL GALAXIES WITH THE FERMI-LARGE AREA TELESCOPE DETECTOR AND CONSTRAINTS ON DARK MATTER MODELS
We report on the observations of 14 dwarf spheroidal galaxies with the Fermi Gamma-Ray Space Telescope taken during the first 11 months of survey mode operations. The Fermi telescope provides a newExpand
Observations of MilkyWay Dwarf Spheroidal galaxies with the Fermi-LAT detector and
We report on the observations of 14 dwarf spheroidal galaxies with the Fermi Gamma-Ray Space Telescope taken during the first 11 months of survey mode operations. The Fermi telescope, which isExpand
THE MOST DARK-MATTER-DOMINATED GALAXIES : PREDICTED GAMMA-RAY SIGNALS FROM THE FAINTEST MILKY WAY DWARFS
We use kinematic data from three new nearby, extremely low luminosity Milky Way dwarf galaxies (Ursa Major II, Willman 1, and Coma Berenices) to constrain the properties of their dark matter halos,Expand
Annihilation vs. decay: constraining dark matter properties from a gamma-ray detection
Most proposed dark matter candidates are stable and are produced thermally in the early Universe. However, there is also the possibility of unstable (but long-lived) dark matter, produced thermallyExpand
Precise constraints on the dark matter content of Milky Way dwarf galaxies for gamma-ray experiments
We examine the prospects for detecting {gamma}-rays from dark matter annihilation in the six most promising dwarf spheroidal (dSph) satellite galaxies of the Milky Way. We use recently measuredExpand
Indirect Dark Matter Detection Limits from the Ultra-Faint Milky Way Satellite Segue 1
We use new kinematic data from the ultrafaint Milky Way satellite Segue 1 to model its dark matter distribution and derive upper limits on the dark matter annihilation cross section. Using gamma-rayExpand
Constraining the dark matter annihilation cross-section with Cherenkov telescope observations of dwarf galaxies
The presence of dark matter in the halo of our Galaxy could be revealed through indirect detection of its annihilation products. Dark matter annihilation is one possible interpretation of theExpand
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