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… 
Angular signatures of dark matter in the diffuse gamma ray background
Dark matter annihilating in our galaxy's halo and elsewhere in the universe is expected to generate a diffuse flux of gamma rays, potentially observable with next generation satellite-based
Can astrophysical gamma-ray sources mimic dark matter annihilation in galactic satellites?
The nature of the cosmic dark matter is unknown. The most compelling hypothesis is that dark matter consists of weakly interacting massive particles (WIMPs) in the 100 GeV mass range. Such particles
Search for Dark Matter with Fermi Large Area Telescope: The Galactic Center
Dark Matter (DM) as a weakly interacting massive particle could annihilate or decay and give rise to high energy gamma-rays. Then an indirect search for Dark Matter is possible by means of the Large
Dark matter subhalos and unidentified sources in the Fermi 3FGL source catalog
If dark matter consists of weakly interacting massive particles (WIMPs), dark matter subhalos in the Milky Way could be detectable as gamma-ray point sources due to WIMP annihilation. In this work,
Neutralino annihilation into gamma-rays in the Milky Way and in external galaxies
We discuss the gamma-ray signal from dark matter annihilation in our Galaxy and in external objects, namely, the Large Magellanic Cloud, the Andromeda Galaxy (M31), and M87. We derive predictions for
Fitting the gamma-ray spectrum from dark matter with DMFIT: GLAST and the galactic center region
We study the potential of GLAST for unveiling particle dark matter properties with gamma-ray observations of the galactic center region. We present full GLAST simulations including all gamma-ray
Gamma ray lines: What will they tell us about supersymmetry?
Neutralino dark matter can be indirectly detected by observing the gamma ray lines from the annihilation processes χχ → yy and χχ → yZ. In this paper we study the implications that the observation of
Multiwavelength signals of dark matter annihilations at the Galactic center
We perform a systematic study of the multiwavelength signal induced by weakly interacting massive particle (WIMP) annihilations at the Galactic Center (GC). Referring to a generic WIMP dark matter
γ-ray flux from dark matter annihilation in galactic caustics
In the framework of indirect dark matter searches we investigate the flux of high energy γ-ray photons produced by annihilation of dark matter in caustics within our Galaxy under the hypothesis that
Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic Center
The apparent gamma-ray excess in the Galactic center region and inner Galaxy has attracted considerable interest, notably because both its spectrum and its radial distribution are consistent with an
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 125 REFERENCES
Cosmological dark matter annihilations into γ rays: A closer look
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
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
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
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.
TLDR
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?
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
...
1
2
3
4
5
...