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The diffuse galactic EGRET gamma ray data show a clear excess for energies above 1 GeV in comparison with the expectations from conventional galactic models. The excess is seen with the same spectrum in all sky directions, as expected for…

Astrophysics · Physics 2007-05-23 W. de Boer , M. Herold , C. Sander , V. Zhukov , A. V. Gladyshev , D. I. Kazakov

The EGRET excess in the diffuse galactic gamma ray data above 1 GeV shows all the features expected from Dark Matter WIMP Annihilation: a)it is present and has the same spectrum in all sky directions, not just in the galactic plane. b) The…

Astrophysics · Physics 2007-05-23 W. de Boer

The EGRET excess in the diffuse galactic gamma ray data above 1 GeV shows all features expected from Dark Matter WIMP Annihilation: a)it is present and has the same spectrum in all sky directions, not just in the galactic plane. b) The…

Astrophysics · Physics 2007-05-23 W. de Boer

The public data from the EGRET space telescope on diffuse Galactic gamma rays in the energy range from 0.1 to 10 GeV are reanalyzed with the purpose of searching for signals of Dark Matter annihilation (DMA). The analysis confirms the…

Astrophysics · Physics 2009-11-13 W. de Boer , C. Sander , V. Zhukov , A. V. Gladyshev , D. I. Kazakov

The public data from the EGRET space telescope on diffuse galactic gamma rays in the energy range from 0.1 to 10 GeV show an excess for energies above 1 GeV in comparison with the expectations from conventional galactic models. This excess…

High Energy Physics - Phenomenology · Physics 2007-05-23 W. de Boer

The diffuse galactic EGRET gamma ray data show a clear excess for energies above 1 GeV in comparison with the expectations from conventional galactic models. This excess shows all the features expected from Dark Matter WIMP Annihilation:…

Astrophysics · Physics 2009-09-29 W. de Boer , I. Gebauer , C. Sander , M. Weber , V. Zhukov

The excess above 1 GeV in the energy spectrum of the diffuse Galactic gamma radiation, measured with the EGRET experiment, can be interpreted as the annihilation of Dark Matter (DM) particles. The DM is distributed in a halo around the…

Astrophysics · Physics 2007-10-29 Markus Weber

Elsaesser and Mannheim fit a contribution of Dark Matter Annihilation (DMA) to the extragalactic contribution of the galactic diffuse gamma ray flux, as deduced from the EGRET data by Strong, Moskalenko and Reimer.They find a WIMP mass of…

Astrophysics · Physics 2009-11-11 W. de Boer , C. Sander , V. Zhukov , A. V. Gladyshev , D. I. Kazakov

The excess of diffuse galactic gamma rays above 1 GeV, as observed by the EGRET telescope on the NASA Compton Gamma Ray Observatory, shows all the key features from Dark Matter (DM) annihilation: (i) the energy spectrum of the excess is the…

Astrophysics · Physics 2007-10-29 W. de Boer , I. Gebauer , M. Weber , C. Sander , V. Zhukov , D. Kazakov

A sophisticated analysis of EGRET data has found evidence for gamma-ray emission from the galactic halo. I entertain the possibility that part of the EGRET signal is due to WIMP annihilations in the halo. I show that a viable candidate with…

Astrophysics · Physics 2007-05-23 Paolo Gondolo

Recently it was shown that the excess of diffuse Galactic gamma rays above 1 GeV traces the Dark Matter halo, as proven by reconstructing the peculiar shape of the rotation curve of our Galaxy from the gamma ray excess. This can be…

High Energy Physics - Phenomenology · Physics 2008-11-26 W. de Boer , C. Sander , V. Zhukov , A. V. Gladyshev , D. I. Kazakov

Recently it was shown that the excess of diffuse Galactic gamma rays above 1 GeV could be interpreted as a Dark Matter annihilation signal. From the spectral shape of the excess it is possible to determine a range for the allowed WIMP mass…

High Energy Physics - Phenomenology · Physics 2007-10-25 Christian Sander

The EGRET excess of diffuse Galactic gamma rays shows all the key features of dark matter annihilation (DMA) for a WIMP mass in the range 50-100 GeV, especially the distribution of the excess is compatible with a standard halo profile with…

Astrophysics · Physics 2017-08-23 Wim de Boer

The extragalactic background (EGB) of diffuse gamma rays can be determined by subtracting the Galactic contribution from the data. This requires a Galactic model (GM) and we include for the first time the contribution of dark matter…

Astrophysics · Physics 2009-11-13 W. de Boer , A. Nordt , C. Sander , V. Zhukov

The diffuse Galactic $\gamma$-rays from EGRET observation shows excesses above 1 GeV in comparison with the expectations from conventional Galactic cosmic ray (CR) propagation model. In the work we try to solve the "GeV excess" problem by…

Astrophysics · Physics 2008-11-26 Xiao-Jun Bi , Juan Zhang , Qiang Yuan , Jian-Li Zhang , HongSheng Zhao

The EGRET excess of diffuse Galactic gamma rays shows all the features expected from dark matter annihilation (DMA): a spectral shape given by the fragmentation of mono-energetic quarks, which is the same in all sky directions and an…

Astrophysics · Physics 2008-01-09 Iris Gebauer

The direct measurements of the cosmic electron-positron spectrum around 1 TeV made by DAMPE have induced many theoretical speculations about possible excesses in the data above the standard astrophysical predictions that might have the dark…

High Energy Astrophysical Phenomena · Physics 2019-07-01 Konstantin Belotsky , Airat Kamaletdinov , Maxim Laletin , Maxim Solovyov

Dark Matter annihilation (DMA) may yield an excess of gamma rays and antimatter particles, like antiprotons and positrons, above the background from cosmic ray interactions. Several signatures, ranging from the positron excess, as observed…

Astrophysics · Physics 2009-11-13 W. de Boer

Recent observations of the Galactic center with ground based gamma-ray instruments have revealed a TeV (10$^{12}$ eV) gamma-ray signal consistent with the position of Sgr A*. The derived luminosity of the signal above 1 TeV is a few…

Astrophysics · Physics 2010-11-05 D. Horns

The apparent excess of gamma rays in an extended region in the direction of the galactic center has a spatial distribution and amplitude that are suggestive of dark matter annihilations. If this excess is indeed due to dark matter…

High Energy Physics - Phenomenology · Physics 2014-11-19 Adam Martin , Jessie Shelton , James Unwin
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