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. 2011 Apr 22;106(16):161301.
doi: 10.1103/PhysRevLett.106.161301. Epub 2011 Apr 18.

Search for a dark matter annihilation signal from the galactic center halo with H.E.S.S

A Abramowski  1 , F Acero, F Aharonian, A G Akhperjanian, G Anton, A Barnacka, U Barres de Almeida, A R Bazer-Bachi, Y Becherini, J Becker, B Behera, K Bernlöhr, A Bochow, C Boisson, J Bolmont, P Bordas, V Borrel, J Brucker, F Brun, P Brun, T Bulik, I Büsching, S Carrigan, S Casanova, M Cerruti, P M Chadwick, A Charbonnier, R C G Chaves, A Cheesebrough, L-M Chounet, A C Clapson, G Coignet, J Conrad, M Dalton, M K Daniel, I D Davids, B Degrange, C Deil, H J Dickinson, A Djannati-Ataï, W Domainko, L O'C Drury, F Dubois, G Dubus, J Dyks, M Dyrda, K Egberts, P Eger, P Espigat, L Fallon, C Farnier, S Fegan, F Feinstein, M V Fernandes, A Fiasson, G Fontaine, A Förster, M Füssling, Y A Gallant, H Gast, L Gérard, D Gerbig, B Giebels, J F Glicenstein, B Glück, P Goret, D Göring, J D Hague, D Hampf, M Hauser, S Heinz, G Heinzelmann, G Henri, G Hermann, J A Hinton, A Hoffmann, W Hofmann, P Hofverberg, D Horns, A Jacholkowska, O C de Jager, C Jahn, M Jamrozy, I Jung, M A Kastendieck, K Katarzyński, U Katz, S Kaufmann, D Keogh, M Kerschhaggl, D Khangulyan, B Khélifi, D Klochkov, W Kluźniak, T Kneiske, Nu Komin, K Kosack, R Kossakowski, H Laffon, G Lamanna, D Lennarz, T Lohse, A Lopatin, C-C Lu, V Marandon, A Marcowith, J Masbou, D Maurin, N Maxted, T J L McComb, M C Medina, J Méhault, R Moderski, E Moulin, C L Naumann, M Naumann-Godo, M de Naurois, D Nedbal, D Nekrassov, N Nguyen, B Nicholas, J Niemiec, S J Nolan, S Ohm, J-F Olive, E de Oña Wilhelmi, B Opitz, M Ostrowski, M Panter, M Paz Arribas, G Pedaletti, G Pelletier, P-O Petrucci, S Pita, G Pühlhofer, M Punch, A Quirrenbach, M Raue, S M Rayner, A Reimer, O Reimer, M Renaud, R de los Reyes, F Rieger, J Ripken, L Rob, S Rosier-Lees, G Rowell, B Rudak, C B Rulten, J Ruppel, F Ryde, V Sahakian, A Santangelo, R Schlickeiser, F M Schöck, A Schönwald, U Schwanke, S Schwarzburg, S Schwemmer, A Shalchi, M Sikora, J L Skilton, H Sol, G Spengler, Ł Stawarz, R Steenkamp, C Stegmann, F Stinzing, I Sushch, A Szostek, J-P Tavernet, R Terrier, O Tibolla, M Tluczykont, K Valerius, C van Eldik, G Vasileiadis, C Venter, J P Vialle, A Viana, P Vincent, M Vivier, H J Völk, F Volpe, S Vorobiov, M Vorster, S J Wagner, M Ward, A Wierzcholska, A Zajczyk, A A Zdziarski, A Zech, H-S Zechlin; H.E.S.S. Collaboration
Affiliations

Search for a dark matter annihilation signal from the galactic center halo with H.E.S.S

A Abramowski et al. Phys Rev Lett. .

Abstract

A search for a very-high-energy (VHE; ≥100 GeV) γ-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 γ-ray spectrum measured with the High Energy Stereoscopic System (H.E.S.S.) γ-ray instrument in the energy range between 300 GeV and 30 TeV shows no hint of a residual γ-ray flux. Assuming conventional Navarro-Frenk-White and Einasto density profiles, limits are derived on the velocity-weighted annihilation cross section (σv) as a function of the DM particle mass. These are among the best reported so far for this energy range and in particular differ only little between the chosen density profile parametrizations. In particular, for the DM particle mass of ∼1 TeV, values for (σv) above 3×10(-25) cm(3) s(-1) are excluded for the Einasto density profile.

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