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Journal Articles Physical Review D Year : 2014

Search for dark matter annihilation signatures in H.E.S.S. observations of Dwarf Spheroidal Galaxies

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Abramowski A.
  • Function : Author
Aharonian F.
  • Function : Author
Benkhali F. Ait
  • Function : Author
Akhperjanian A. G.
  • Function : Author
Angüner E.
  • Function : Author
Backes M.
  • Function : Author
Balenderan S.
  • Function : Author
Agnès Balzer
  • Function : Author
Barnacka A.
  • Function : Author
Becherini Y.
  • Function : Author
Tjus J. Becker
  • Function : Author
Berge D.
  • Function : Author
Bernhard S.
  • Function : Author
Bernlöhr K.
  • Function : Author
Birsin E.
  • Function : Author
Böttcher M.
  • Function : Author
Bordas P.
  • Function : Author
Brun F.
  • Function : Author
Brun P.
  • Function : Author
Bryan M.
  • Function : Author
Bulik T.
  • Function : Author
Carrigan S.
  • Function : Author
Casanova S.
  • Function : Author
Chadwick P. M.
  • Function : Author
Chakraborty N.
  • Function : Author
Colafrancesco S.
  • Function : Author
Cologna G.
  • Function : Author
Conrad J.
  • Function : Author
Cui Y.
  • Function : Author
Davids I. D.
  • Function : Author
Deil C.
  • Function : Author
Dewilt P.
  • Function : Author
Domainko W.
  • Function : Author
Donath A.
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Drury L. O'C.
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Dubus G.
Dutson K.
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Dyks J.
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Dyrda M.
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Edwards T.
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Egberts K.
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Eger P.
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Farnier C.
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Fegan S.
Fernandes M. V.
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Fiasson A.
Förster A.
  • Function : Author
Füssling M.
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Gajdus M.
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Giavitto G.
  • Function : Author
Glicenstein J. F.
  • Function : Author
Gottschall D.
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Grondin M. -H.
  • Function : Author
Grudzińska M.
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Hadsch D.
  • Function : Author
Häffner S.
  • Function : Author
Hahn J.
  • Function : Author
Harris J.
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Heinzelmann G.
  • Function : Author
Henri G.
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Hermann G.
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Hillert A.
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Hinton J. A.
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Hofmann W.
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Hofverberg P.
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Holler M.
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Horns D.
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Ivascenko A.
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Jahn C.
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Jamrozy M.
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Janiak M.
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Jankowsky F.
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Jung I.
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Kastendieck M. A.
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Katarzyński K.
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Katz U.
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Kaufmann S.
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Khélifi B.
Klepser S.
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Klochkov D.
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Kluźniak W.
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Kolitzus D.
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Kosack K.
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Krakau S.
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Krüger P. P.
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Lefranc V.
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Lohse T.
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Lopatin A.
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Lu C. -C.
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Marandon V.
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Marx R.
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Maxted N.
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Mayer M.
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Mccomb T. J. L.
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Meintjes P. J.
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Menzler U.
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Meyer M.
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A. M. W. Mitchell
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Moderski R.
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Mohamed M.
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Morå K.
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Moulin E.
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Murach T.
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Niemiec J.
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Nolan S. J.
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Oakes L.
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Odaka H.
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Ohm S.
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Opitz B.
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Ostrowski M.
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Oya I.
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Panter M.
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Parsons R. D.
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Arribas M. Paz
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Pekeur N. W.
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Pelletier G.
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Perez J.
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Petrucci P. -O.
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Peyaud B.
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Poon H.
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Pühlhofer G.
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Punch M.
Quirrenbach A.
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Raab S.
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Reimer A.
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Reimer O.
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Reyes R. de Los
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Rieger F.
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Rob L.
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Romoli C.
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Rowell G.
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Rudak B.
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Sahakian V.
  • Function : Author
Salek D.
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Santangelo A.
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Schlickeiser R.
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Schüssler F.
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Schulz A.
  • Function : Author
Schwanke U.
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Schwarzburg S.
  • Function : Author
Schwemmer S.
  • Function : Author
Spanier F.
  • Function : Author
Spengler G.
  • Function : Author
Spiess F.
  • Function : Author
Stawarz L.
  • Function : Author
Steenkamp R.
  • Function : Author
Stegmann C.
  • Function : Author
Stinzing F.
  • Function : Author
Stycz K.
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Sushch I.
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Taylor A. M.
  • Function : Author
Tluczykont M.
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Valerius K.
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van Eldik C.
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van Soelen B.
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Veh J.
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Venter C.
  • Function : Author
Viana A.
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Vink J.
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Völk H. J.
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Volpe F.
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Vorster M.
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Vuillaume T.
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Wagner S. J.
  • Function : Author
Wagner P.
  • Function : Author
Wagner R. M.
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Ward M.
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Weidinger M.
  • Function : Author
Weitzel Q.
  • Function : Author
White R.
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Wierzcholska A.
  • Function : Author
Willmann P.
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Wörnlein A.
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Wouters D.
  • Function : Author
Yang R.
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Zabalza V.
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Zacharias M.
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Zdziarski A. A.
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Zechlin H. -S.
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Abstract

Dwarf spheroidal galaxies of the Local Group are close satellites of the Milky Way characterized by a large mass-to-light ratio and are not expected to be the site of non-thermal high-energy gamma-ray emission or intense star formation. Therefore they are amongst the most promising candidates for indirect dark matter searches. During the last years the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric Cherenkov telescopes observed five of these dwarf galaxies for more than 140 hours in total, searching for TeV gamma-ray emission from annihilation of dark matter particles. The new results of the deep exposure of the Sagittarius dwarf spheroidal galaxy, the first observations of the Coma Berenices and Fornax dwarves and the re-analysis of two more dwarf spheroidal galaxies already published by the H.E.S.S. Collaboration, Carina and Sculptor, are presented. In the absence of a significant signal new constraints on the annihilation cross-section applicable to Weakly Interacting Massive Particles (WIMPs) are derived by combining the observations of the five dwarf galaxies. The combined exclusion limit depends on the WIMP mass and the best constraint is reached at 1-2 TeV masses with a cross-section upper bound of ~3.9x10-24 cm^3 s-1 at a 95% confidence level.
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in2p3-01082757 , version 1 (04-06-2021)

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Abramowski A., Aharonian F., Benkhali F. Ait, Akhperjanian A. G., Angüner E., et al.. Search for dark matter annihilation signatures in H.E.S.S. observations of Dwarf Spheroidal Galaxies. Physical Review D, 2014, 90 (11), pp.112012. ⟨10.1103/PhysRevD.90.112012⟩. ⟨in2p3-01082757⟩
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