# The Galactic center as a dark matter gamma-ray source

@article{Cesarini2004TheGC,
title={The Galactic center as a dark matter gamma-ray source},
author={Alessandro Cesarini and Francesco Fucito and Andrea Lionetto and A. Morselli and Piero Ullio},
journal={Astroparticle Physics},
year={2004},
volume={21},
pages={267-285}
}
Abstract The EGRET telescope has identified a gamma-ray source at the Galactic center. We point out here that the spectral features of this source are compatible with the gamma-ray flux induced by pair annihilations of dark matter weakly interacting massive particles (WIMPs). We show that the discrimination between this interpretation and other viable explanations will be possible with GLAST, the next major gamma-ray telescope in space, on the basis of both the spectral and the angular…
108 Citations

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## References

SHOWING 1-10 OF 125 REFERENCES
Cosmological dark matter annihilations into γ rays: A closer look
• Physics
• 2002
We investigate the prospects of detecting weakly interacting massive particle (WIMP) dark matter by measuring the contribution to the extragalactic gamma-ray radiation induced, in any dark matter
Neutralino gamma-ray signals from accreting halo dark matter
• Physics
• 2001
There is mounting evidence that a self-consistent model for particle cold dark matter has to take into consideration spatial inhomogeneities on sub-galactic scales seen, for instance, in
Observability of γ rays from dark matter neutralino annihilations in the Milky Way halo
• Physics
• 1998
Abstract Recent advances in N-body simulations of cold dark matter halos point to a substantial density enhancement near the center. This means that, e.g., the γ-ray signals from neutralino dark
High-energy gamma-ray emission from the Galactic Center
The EGRET instrument on the Compton Gamma- Ray Observatory has observed the Galactic Center (GC) region with good coverage at a number of epochs. A strong excess of emission is observed, peaking at
Diffuse Continuum Gamma Rays from the Galaxy
• Physics
• 2000
A new study of the diUuse Galactic c-ray continuum radiation is presented, using a cosmic-ray propa- gation model which includes nucleons, antiprotons, electrons, positrons, and synchrotron
The Galactic center arc as source of high-energy gamma-rays
We discuss the radio {\it arc} at the galactic center to be the counterpart of the high-energy \gr source 2EG J1746-2852. The observed \gr flux is constant within the statistical limits and the
Astrophysics and Space Science manuscript No.
The COMPTEL unidentified source GRO J 1411-64 was observed by INTEGRAL and XMM-Newton in 2005. The Circinus Galaxy is the only source detected within the 4σ location error of GRO J1411-64, but in
Spectral gamma-ray signatures of cosmological dark matter annihilations.
• Physics, Medicine
Physical review letters
• 2001
A new signature for weakly interacting massive particle (WIMP) dark matter is proposed, a spectral feature in the diffuse extragalactic gamma-ray radiation that comes from the asymmetric distortion of the line due to WIMP annihilation into two gamma rays caused by the cosmological redshift.
Non-baryonic dark matter: observational evidence and detection methods
The evidence for the existence of dark matter in the universe is reviewed. A general picture emerges, where both baryonic and non-baryonic dark matter is needed to explain current observations. In
Dark-matter spike at the galactic center?
• Physics
• 2001
The past growth of the central black hole (BH) might have enhanced the density of cold dark matter halo particles at the galactic center. We compute this effect in realistic growth models of the