Search for a Dark Matter annihilation signal from the Galactic Center halo with H.E.S.S - Archive ouverte HAL Access content directly
Journal Articles Physical Review Letters Year : 2011

Search for a Dark Matter annihilation signal from the Galactic Center halo with H.E.S.S

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A. Abramowski
  • Function : Author
F. Aharonian
A. G. Akhperjanian
  • Function : Author
G. Anton
  • Function : Author
U. Barres de Almeida
  • Function : Author
J. Becker
  • Function : Author
B. Behera
  • Function : Author
K. Bernlöhr
A. Bochow
  • Function : Author
C. Boisson
P. Bordas
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J. Brucker
  • Function : Author
F. Brun
T. Bulik
  • Function : Author
I. Büsching
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S. Carrigan
  • Function : Author
S. Casanova
M. Cerruti
P. M. Chadwick
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R. C. G. Chaves
  • Function : Author
A. Cheesebrough
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A. C. Clapson
  • Function : Author
J. Conrad
  • Function : Author
M. Dalton
  • Function : Author
M. K. Daniel
  • Function : Author
I. D. Davids
  • Function : Author
C. Deil
  • Function : Author
H. J. Dickinson
  • Function : Author
W. Domainko
  • Function : Author
L. O'C. Drury
  • Function : Author
J. Dyks
  • Function : Author
M. Dyrda
  • Function : Author
K. Egberts
  • Function : Author
P. Eger
  • Function : Author
L. Fallon
  • Function : Author
S. Fegan
M. V. Fernandes
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A. Fiasson
A. Förster
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M. Füssling
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H. Gast
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D. Gerbig
  • Function : Author
B. Glück
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D. Göring
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J. D. Hague
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D. Hampf
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M. Hauser
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S. Heinz
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G. Heinzelmann
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G. Hermann
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J. A. Hinton
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A. Hoffmann
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W. Hofmann
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P. Hofverberg
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D. Horns
O. C. de Jager
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C. Jahn
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M. Jamrozy
I. Jung
M. A. Kastendieck
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K. Katarzynski
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U. Katz
S. Kaufmann
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D. Keogh
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M. Kerschhaggl
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D. Khangulyan
B. Khélifi
D. Klochkov
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W. Kluźniak
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T. Kneiske
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D. Lennarz
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T. Lohse
A. Lopatin
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C. -C Lu
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V. Marandon
Julien Masbou
N. Maxted
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T. J. L. Mccomb
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R. Moderski
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M. de Naurois
D. Nedbal
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D. Nekrassov
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N. Nguyen
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B. Nicholas
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J. Niemiec
S. J. Nolan
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S. Ohm
E. de Oña Wilhelmi
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B. Opitz
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M. Ostrowski
M. Panter
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M. Paz Arribas
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G. Pedaletti
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G. Pühlhofer
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M. Punch
A. Quirrenbach
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M. Raue
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S. M. Rayner
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A. Reimer
O. Reimer
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R. de Los Reyes
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F. Rieger
J. Ripken
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L. Rob
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G. Rowell
B. Rudak
C. B. Rulten
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J. Ruppel
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F. Ryde
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V. Sahakian
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A. Santangelo
R. Schlickeiser
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F. M. Schöck
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A. Schönwald
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U. Schwanke
S. Schwarzburg
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S. Schwemmer
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A. Shalchi
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M. Sikora
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J. L. Skilton
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H. Sol
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G. Spengler
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Ł. Stawarz
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R. Steenkamp
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C. Stegmann
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F. Stinzing
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I. Sushch
  • Function : Author
O. Tibolla
  • Function : Author
M. Tluczykont
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K. Valerius
  • Function : Author
C. van Eldik
C. Venter
H. J. Völk
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M. Vorster
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S. J. Wagner
  • Function : Author
M. Ward
  • Function : Author
A. Wierzcholska
A. Zajczyk
  • Function : Author
A. A. Zdziarski
  • Function : Author
A. Zech
H. -S. Zechlin
  • Function : Author

Abstract

A search for a very-high-energy (VHE; >= 100 GeV) gamma-ray signal from self-annihilating particle Dark Matter (DM) is performed towards a region of projected distance r ~ 45-150 pc from the Galactic Center. The background-subtracted gamma-ray spectrum measured with the High Energy Stereoscopic System (H.E.S.S.) gamma-ray instrument in the energy range between 300 GeV and 30 TeV shows no hint of a residual gamma-ray flux. Assuming conventional Navarro-Frenk-White (NFW) and Einasto density profiles, limits are derived on the velocity-weighted annihilation cross section < \sigma v> as a function of the DM particle mass. These are among the best reported so far for this energy range. In particular, for the DM particle mass of ~1 TeV, values for <\sigma v> above 3 * 10^(-25) cm^3 s^(-1) are excluded for the Einasto density profile. The limits derived here differ much less for the chosen density profile parametrizations, as opposed to limits from gamma-ray observations of dwarf galaxies or the very center of the Milky Way, where the discrepancy is significantly larger.

Dates and versions

in2p3-00580801 , version 1 (29-03-2011)

Identifiers

Cite

A. Abramowski, Fabio Acero, F. Aharonian, A. G. Akhperjanian, G. Anton, et al.. Search for a Dark Matter annihilation signal from the Galactic Center halo with H.E.S.S. Physical Review Letters, 2011, 106, pp.161301. ⟨10.1103/PhysRevLett.106.161301⟩. ⟨in2p3-00580801⟩
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