H.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies

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dc.contributor.author Abramowski, A.
dc.contributor.author Acero, F.
dc.contributor.author Aharonian, F.
dc.contributor.author Akhperjanian, A.G.
dc.contributor.author Anton, G.
dc.contributor.author Barnacka, A.
dc.contributor.author Barres de Almeida, U.
dc.contributor.author Bazer-Bachi, A.R.
dc.contributor.author Becherini, Y.
dc.contributor.author Becker, J.
dc.contributor.author Behera, B.
dc.contributor.author Bernlöhr, K.
dc.contributor.author Bochow, A.
dc.contributor.author Boisson, C.
dc.contributor.author Bolmont, J.
dc.contributor.author Bordas, P.
dc.contributor.author Borrel, V.
dc.contributor.author Brucker, J.
dc.contributor.author Brun, F.
dc.contributor.author Brun, P.
dc.contributor.author Bulik, T.
dc.contributor.author Büsching, Ingo
dc.contributor.author Carrigan, S.
dc.contributor.author Casanova, S.
dc.contributor.author Cerruti, M.
dc.contributor.author Chadwick, P.M.
dc.contributor.author Charbonnier, A.
dc.contributor.author Chaves, R.C.G.
dc.contributor.author Cheesebrough, A.
dc.contributor.author Chounet, L. M.
dc.contributor.author Clapson, A.C.
dc.contributor.author Coignet, G.
dc.contributor.author Conrad, J.
dc.contributor.author Dalton, M.
dc.contributor.author Daniel, M.K.
dc.contributor.author De Jager, Ocker Cornelis
dc.contributor.author De Los Reyes, R.
dc.contributor.author De Naurois, M.
dc.contributor.author De Oña Wilhelmi, E.
dc.contributor.author Degrange, B.
dc.contributor.author Deil, C.
dc.contributor.author Dickinson, H.J.
dc.contributor.author Djannati-Ataï, A.
dc.contributor.author Domainko, W.
dc.contributor.author Drury, L.O'C.
dc.contributor.author Dubois, F.
dc.contributor.author Dubus, G.
dc.contributor.author Dyks, J.
dc.contributor.author Dyrda, M.
dc.contributor.author Egberts, K.
dc.contributor.author Eger, P.
dc.contributor.author Espigat, P.
dc.contributor.author Fallon, L.
dc.contributor.author Farnier, C.
dc.contributor.author Fegan, S.
dc.contributor.author Feinstein, F.
dc.contributor.author Fernandes, M.V.
dc.contributor.author Fiasson, A.
dc.contributor.author Fontaine, G.
dc.contributor.author Förster, A.
dc.contributor.author Füßling, M.
dc.contributor.author Gallant, Y.A.
dc.contributor.author Gast, H.
dc.contributor.author Gérard, L.
dc.contributor.author Gerbig, D.
dc.contributor.author Giebels, B.
dc.contributor.author Glicenstein, J.F.
dc.contributor.author Glück, B.
dc.contributor.author Goret, P.
dc.contributor.author Göring, D.
dc.contributor.author Hague, J.D.
dc.contributor.author Hampf, D.
dc.contributor.author Hauser, M.
dc.contributor.author Heinz, S.
dc.contributor.author Heinzelmann, G.
dc.contributor.author Henri, G.
dc.contributor.author Hermann, G.
dc.contributor.author Hinton, J. A.
dc.contributor.author Hoffmann, A.
dc.contributor.author Hofmann, W.
dc.contributor.author Hofverberg, P.
dc.contributor.author Horns, D.
dc.contributor.author Jacholkowska, A.
dc.contributor.author Jahn, C.
dc.contributor.author Jamrozy, M.
dc.contributor.author Jung, I.
dc.contributor.author Kastendieck, M. A.
dc.contributor.author Katarzyński, K.
dc.contributor.author Katz, U.
dc.contributor.author Kaufmann, S.
dc.contributor.author Keogh, D.
dc.contributor.author Kerschhaggl, M.
dc.contributor.author Khangulyan, D.
dc.contributor.author Khélifi, B.
dc.contributor.author Klochkov, D.
dc.contributor.author Kluzniak, W.
dc.contributor.author Kneiske, T.
dc.contributor.author Komin, Nu
dc.contributor.author Kosack, K.
dc.contributor.author Kossakowski, R.
dc.contributor.author Laffon, H.
dc.contributor.author Lamanna, G.
dc.contributor.author Lennarz, D.
dc.contributor.author Lohse, T.
dc.contributor.author Lopatin, A.
dc.contributor.author Lu, C.C.
dc.contributor.author Marandon, V.
dc.contributor.author Marcowith, A.
dc.contributor.author Masbou, J.
dc.contributor.author Maurin, D.
dc.contributor.author Maxted, N.
dc.contributor.author Mccomb, T.J L.
dc.contributor.author Medina, M.C.
dc.contributor.author Méhault, J.
dc.contributor.author Moderski, R.
dc.contributor.author Moulin, E.
dc.contributor.author Naumann, C.L.
dc.contributor.author Naumann-Godo, M.
dc.contributor.author Nedbal, D.
dc.contributor.author Nekrassov, D.
dc.contributor.author Nguyen, N.
dc.contributor.author Nicholas, B.
dc.contributor.author Niemiec, J.
dc.contributor.author Nolan, S.J.
dc.contributor.author Ohm, S.
dc.contributor.author Olive, J.F.
dc.contributor.author Opitz, B.
dc.contributor.author Ostrowski, M.
dc.contributor.author Panter, M.
dc.contributor.author Paz Arribas, M.
dc.contributor.author Pedaletti, G.
dc.contributor.author Pelletier, G.
dc.contributor.author Petrucci, P.O.
dc.contributor.author Pita, S.
dc.contributor.author Pühlhofer, G.
dc.contributor.author Punch, M.
dc.contributor.author Quirrenbach, A.
dc.contributor.author Raue, M.
dc.contributor.author Rayner, S.M.
dc.contributor.author Reimer, A.
dc.contributor.author Reimer, O.
dc.contributor.author Renaud, M.
dc.contributor.author Rieger, F.
dc.contributor.author Ripken, J.
dc.contributor.author Rob, L.
dc.contributor.author Rosier-Lees, S.
dc.contributor.author Rowell, G.
dc.contributor.author Rudak, B.
dc.contributor.author Rulten, C.B.
dc.contributor.author Ruppel, J.
dc.contributor.author Ryde, F.
dc.contributor.author Sahakian, V.
dc.contributor.author Santangelo, A.
dc.contributor.author Schlickeiser, R.
dc.contributor.author Schöck, F.M.
dc.contributor.author Schönwald, A.
dc.contributor.author Schwanke, U.
dc.contributor.author Schwarzburg, S.
dc.contributor.author Schwemmer, S.
dc.contributor.author Shalchi, A.
dc.contributor.author Sikora, M.
dc.contributor.author Skilton, J.L.
dc.contributor.author Sol, H.
dc.contributor.author Spengler, G.
dc.contributor.author Stawarz, Ł.
dc.contributor.author Steenkamp, R.
dc.contributor.author Stegmann, C.
dc.contributor.author Stinzing, F.
dc.contributor.author Sushch, I.
dc.contributor.author Szostek, A.
dc.contributor.author Tavernet, J.P.
dc.contributor.author Terrier, R.
dc.contributor.author Tibolla, O.
dc.contributor.author Tluczykont, M.
dc.contributor.author Valerius, K.
dc.contributor.author Van Eldik, C.
dc.contributor.author Vasileiadis, G.
dc.contributor.author Venter, Christo
dc.contributor.author Vialle, J.P.
dc.contributor.author Viana, A.
dc.contributor.author Vincent, P.
dc.contributor.author Vivier, M.
dc.contributor.author Völk, H J.
dc.contributor.author Volpe, F.
dc.contributor.author Vorobiov, S.
dc.contributor.author Vorster, Michael Johannes
dc.contributor.author Wagner, S.J.
dc.contributor.author Ward, M.
dc.date.accessioned 2012-09-05T14:44:37Z
dc.date.available 2012-09-05T14:44:37Z
dc.date.issued 2011
dc.identifier.citation Abramowski, A. et al. 2011. H.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies. Astroparticle physics, 34(8):608-616. [: http://www.journals.elsevier.com/astroparticle-physics] en_US
dc.identifier.issn 0927-6505
dc.identifier.issn 1873-2852 (Online)
dc.identifier.uri http://hdl.handle.net/10394/7243
dc.description.abstract The Sculptor and Carina dwarf spheroidal galaxies were observed with the H.E.S.S. Cherenkov telescope array between January 2008 and December 2009. The data sets consist of a total of 11.8 h and 14.8 h of high quality data, respectively. No gamma-ray signal was detected at the nominal positions of these galaxies above 220 GeV and 320 GeV, respectively. Upper limits on the gamma-ray fluxes at 95% CL assuming two forms for the spectral energy distribution (a power law shape and one derived from dark matter annihilation) are obtained at the level of 10-13-10-12 cm-2 s-1 in the TeV range. Constraints on the velocity weighted dark matter particle annihilation cross section for both Sculptor and Carina dwarf galaxies range from σʋ~ 10-21 cm3 s-1 down to σʋ i ~ 10-22 cm3 s-1 depending on the dark matter halo model used. Possible enhancements of the gamma-ray flux are studied: the Sommerfeld effect, which is found to exclude some dark matter particle masses, the internal Bremsstrahlung and clumps in the dark-matter halo distributions. en_US
dc.description.uri http://dx.doi.org/10.1016/j.astropartphys.2010.12.006
dc.description.uri http://ac.els-cdn.com/S0927650510002410/1-s2.0-S0927650510002410-main.pdf?_tid=8b6d08f4-f73e-11e1-a89d-00000aacb361&acdnat=1346838559_75709ebb186e045770ce62614b4926c0
dc.language.iso en en_US
dc.publisher Elsevier Science en_US
dc.subject Gamma-rays: observations – Dwarf spheroidal galaxy en_US
dc.subject dark matter en_US
dc.subject Sommerfeld enhancement en_US
dc.subject internal Bremstrahlung en_US
dc.subject Sculptor en_US
dc.subject Carina en_US
dc.title H.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies en_US
dc.type Article en_US

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