Challenges in Detecting Gamma-Rays From Dark Matter Annihilations in the Galactic Center
arXiv:astro-ph/0603540 · doi:10.1103/PhysRevD.73.103501
Abstract
Atmospheric Cerenkov Telescopes, including HESS and MAGIC, have detected a spectrum of gamma-rays from the galactic center region which extends from 200 GeV or lower, to at least 10 TeV. Although the source of this radiation is not yet known, the spectrum appears to behave as a simple power-law, which is not the expectation for gamma-rays generated through the annihilation of dark matter particles. If instead we conclude that the source of these gamma-rays is astrophysical in origin, this spectrum will constitute a background for future dark matter searches using gamma-rays from this region. In this paper we study how this background will affect the prospects for experiments such as GLAST to detect dark matter in the galactic center. We find that only a narrow range of dark matter annihilation rates are potentially observable by GLAST given this newly discovered background and considering current constraints from EGRET and HESS. We also find that a detection of line emission, while not completely ruled out, is only possible for a very narrow range of dark matter models and halo profiles.
8 pages, 10 figures
References in corpus (1)
Cited by in corpus (40)
- Dark Matter and Collider Phenomenology of Universal Extra Dimensions
- Significant Gamma Lines from Inert Higgs Dark Matter
- Gamma-ray and radio tests of the e+e- excess from DM annihilations
- Dark Matter Candidates: A Ten-Point Test
- Evidence Of Dark Matter Annihilations In The WMAP Haze
- Neutrino Constraints on the Dark Matter Total Annihilation Cross Section
- Fitting the Gamma-Ray Spectrum from Dark Matter with DMFIT: GLAST and the Galactic Center Region
- Multi-wavelength signals of dark matter annihilations at the Galactic center
- Can Astrophysical Gamma Ray Sources Mimic Dark Matter Annihilation in Galactic Satellites?
- Indirect detection of light neutralino dark matter in the NMSSM
- Strategies for Determining the Nature of Dark Matter
- Extracting the Gamma Ray Signal from Dark Matter Annihilation in the Galactic Center Region
- Neutralino Dark Matter in Mirage Mediation
- Hunting the lightest lightest neutralinos
- TASI 2008 Lectures on Dark Matter
- Determining the WIMP mass using the complementarity between direct and indirect searches and the ILC
- Dark matter dynamics in Galactic center
- Search for Dark Matter
- Optimal angular window for observing Dark Matter annihilation from the Galactic Center region: the case of gamma-ray lines
- Indirect Detection of Little Higgs Dark Matter
- Prospects For Detecting Dark Matter With GLAST In Light Of The WMAP Haze
- Angular Signatures of Dark Matter in the Diffuse Gamma Ray Background
- Dark matter annihilation from intermediate-mass black holes: Contribution to the extragalactic gamma-ray background
- Increasing the Neutralino Relic Abundance with Slepton Coannihilations: Consequences for Indirect Dark Matter Detection
- Search for Gamma-rays from Dark Matter annihilations around Intermediate Mass Black Holes with the H.E.S.S. experiment
- X-ray Radiation from the Annihilation of Dark Matter at the Galactic Center
- Lightest Higgs Boson and Relic Neutralino in the MSSM with CP Violation
- Looking for a heavy wino LSP in collider and dark matter experiments
- Black Holes as Dark Matter Annihilation Boosters
- Panglossian Prospects for Detecting Neutralino Dark Matter in Light of Natural Priors
- Direct/indirect detection signatures of nonthermally produced dark matter
- Distinguishing Supersymmetry From Universal Extra Dimensions or Little Higgs Models With Dark Matter Experiments
- A celestial gamma-ray foreground due to the albedo of small solar system bodies and a remote probe of the interstellar cosmic ray spectrum
- Gamma-Rays from Dark Matter Mini-Spikes in M31
- Dark Matter: the Connection with Gamma-Ray Astrophysics
- Status and perspectives of indirect and direct dark matter searches
- A comparison between the detection of gamma rays and positrons from neutralino annihilation
- Mass Limits on Neutralino Dark Matter
- Constraining supersymmetry from the satellite experiments
- Detecting the dark matter annihilation at the ground EAS detectors