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dc.contributor.authorAbramowski, A.
dc.contributor.authorAcero, F.
dc.contributor.authorAharonian, F.
dc.contributor.authorAkhperjanian, A.G.
dc.contributor.authorAnton, G.
dc.contributor.authorBarnacka, A.
dc.contributor.authorBarres de Almeida, U.
dc.contributor.authorBazer-Bachi, A.R.
dc.contributor.authorBecherini, Y.
dc.contributor.authorBecker, J.
dc.contributor.authorBehera, B.
dc.contributor.authorBernlöhr, K.
dc.contributor.authorBochow, A.
dc.contributor.authorBoisson, C.
dc.contributor.authorBolmont, J.
dc.contributor.authorBordas, P.
dc.contributor.authorBorrel, V.
dc.contributor.authorBrucker, J.
dc.contributor.authorBrun, F.
dc.contributor.authorBrun, P.
dc.contributor.authorBulik, T.
dc.contributor.authorBüsching, Ingo
dc.contributor.authorCarrigan, S.
dc.contributor.authorCasanova, S.
dc.contributor.authorCerruti, M.
dc.contributor.authorChadwick, P.M.
dc.contributor.authorCharbonnier, A.
dc.contributor.authorChaves, R.C.G.
dc.contributor.authorCheesebrough, A.
dc.contributor.authorChounet, L. M.
dc.contributor.authorClapson, A.C.
dc.contributor.authorCoignet, G.
dc.contributor.authorConrad, J.
dc.contributor.authorDalton, M.
dc.contributor.authorDaniel, M.K.
dc.contributor.authorDe Jager, Ocker Cornelis
dc.contributor.authorDe Los Reyes, R.
dc.contributor.authorDe Naurois, M.
dc.contributor.authorDe Oña Wilhelmi, E.
dc.contributor.authorDegrange, B.
dc.contributor.authorDeil, C.
dc.contributor.authorDickinson, H.J.
dc.contributor.authorDjannati-Ataï, A.
dc.contributor.authorDomainko, W.
dc.contributor.authorDrury, L.O'C.
dc.contributor.authorDubois, F.
dc.contributor.authorDubus, G.
dc.contributor.authorDyks, J.
dc.contributor.authorDyrda, M.
dc.contributor.authorEgberts, K.
dc.contributor.authorEger, P.
dc.contributor.authorEspigat, P.
dc.contributor.authorFallon, L.
dc.contributor.authorFarnier, C.
dc.contributor.authorFegan, S.
dc.contributor.authorFeinstein, F.
dc.contributor.authorFernandes, M.V.
dc.contributor.authorFiasson, A.
dc.contributor.authorFontaine, G.
dc.contributor.authorFörster, A.
dc.contributor.authorFüßling, M.
dc.contributor.authorGallant, Y.A.
dc.contributor.authorGast, H.
dc.contributor.authorGérard, L.
dc.contributor.authorGerbig, D.
dc.contributor.authorGiebels, B.
dc.contributor.authorGlicenstein, J.F.
dc.contributor.authorGlück, B.
dc.contributor.authorGoret, P.
dc.contributor.authorGöring, D.
dc.contributor.authorHague, J.D.
dc.contributor.authorHampf, D.
dc.contributor.authorHauser, M.
dc.contributor.authorHeinz, S.
dc.contributor.authorHeinzelmann, G.
dc.contributor.authorHenri, G.
dc.contributor.authorHermann, G.
dc.contributor.authorHinton, J. A.
dc.contributor.authorHoffmann, A.
dc.contributor.authorHofmann, W.
dc.contributor.authorHofverberg, P.
dc.contributor.authorHorns, D.
dc.contributor.authorJacholkowska, A.
dc.contributor.authorJahn, C.
dc.contributor.authorJamrozy, M.
dc.contributor.authorJung, I.
dc.contributor.authorKastendieck, M. A.
dc.contributor.authorKatarzyński, K.
dc.contributor.authorKatz, U.
dc.contributor.authorKaufmann, S.
dc.contributor.authorKeogh, D.
dc.contributor.authorKerschhaggl, M.
dc.contributor.authorKhangulyan, D.
dc.contributor.authorKhélifi, B.
dc.contributor.authorKlochkov, D.
dc.contributor.authorKluzniak, W.
dc.contributor.authorKneiske, T.
dc.contributor.authorKomin, Nu
dc.contributor.authorKosack, K.
dc.contributor.authorKossakowski, R.
dc.contributor.authorLaffon, H.
dc.contributor.authorLamanna, G.
dc.contributor.authorLennarz, D.
dc.contributor.authorLohse, T.
dc.contributor.authorLopatin, A.
dc.contributor.authorLu, C.C.
dc.contributor.authorMarandon, V.
dc.contributor.authorMarcowith, A.
dc.contributor.authorMasbou, J.
dc.contributor.authorMaurin, D.
dc.contributor.authorMaxted, N.
dc.contributor.authorMccomb, T.J L.
dc.contributor.authorMedina, M.C.
dc.contributor.authorMéhault, J.
dc.contributor.authorModerski, R.
dc.contributor.authorMoulin, E.
dc.contributor.authorNaumann, C.L.
dc.contributor.authorNaumann-Godo, M.
dc.contributor.authorNedbal, D.
dc.contributor.authorNekrassov, D.
dc.contributor.authorNguyen, N.
dc.contributor.authorNicholas, B.
dc.contributor.authorNiemiec, J.
dc.contributor.authorNolan, S.J.
dc.contributor.authorOhm, S.
dc.contributor.authorOlive, J.F.
dc.contributor.authorOpitz, B.
dc.contributor.authorOstrowski, M.
dc.contributor.authorPanter, M.
dc.contributor.authorPaz Arribas, M.
dc.contributor.authorPedaletti, G.
dc.contributor.authorPelletier, G.
dc.contributor.authorPetrucci, P.O.
dc.contributor.authorPita, S.
dc.contributor.authorPühlhofer, G.
dc.contributor.authorPunch, M.
dc.contributor.authorQuirrenbach, A.
dc.contributor.authorRaue, M.
dc.contributor.authorRayner, S.M.
dc.contributor.authorReimer, A.
dc.contributor.authorReimer, O.
dc.contributor.authorRenaud, M.
dc.contributor.authorRieger, F.
dc.contributor.authorRipken, J.
dc.contributor.authorRob, L.
dc.contributor.authorRosier-Lees, S.
dc.contributor.authorRowell, G.
dc.contributor.authorRudak, B.
dc.contributor.authorRulten, C.B.
dc.contributor.authorRuppel, J.
dc.contributor.authorRyde, F.
dc.contributor.authorSahakian, V.
dc.contributor.authorSantangelo, A.
dc.contributor.authorSchlickeiser, R.
dc.contributor.authorSchöck, F.M.
dc.contributor.authorSchönwald, A.
dc.contributor.authorSchwanke, U.
dc.contributor.authorSchwarzburg, S.
dc.contributor.authorSchwemmer, S.
dc.contributor.authorShalchi, A.
dc.contributor.authorSikora, M.
dc.contributor.authorSkilton, J.L.
dc.contributor.authorSol, H.
dc.contributor.authorSpengler, G.
dc.contributor.authorStawarz, Ł.
dc.contributor.authorSteenkamp, R.
dc.contributor.authorStegmann, C.
dc.contributor.authorStinzing, F.
dc.contributor.authorSushch, I.
dc.contributor.authorSzostek, A.
dc.contributor.authorTavernet, J.P.
dc.contributor.authorTerrier, R.
dc.contributor.authorTibolla, O.
dc.contributor.authorTluczykont, M.
dc.contributor.authorValerius, K.
dc.contributor.authorVan Eldik, C.
dc.contributor.authorVasileiadis, G.
dc.contributor.authorVenter, Christo
dc.contributor.authorVialle, J.P.
dc.contributor.authorViana, A.
dc.contributor.authorVincent, P.
dc.contributor.authorVivier, M.
dc.contributor.authorVölk, H J.
dc.contributor.authorVolpe, F.
dc.contributor.authorVorobiov, S.
dc.contributor.authorVorster, Michael Johannes
dc.contributor.authorWagner, S.J.
dc.contributor.authorWard, M.
dc.date.accessioned2012-09-05T14:44:37Z
dc.date.available2012-09-05T14:44:37Z
dc.date.issued2011
dc.identifier.citationAbramowski, 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.issn0927-6505
dc.identifier.issn1873-2852 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/7243
dc.description.abstractThe 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.urihttp://dx.doi.org/10.1016/j.astropartphys.2010.12.006
dc.description.urihttp://ac.els-cdn.com/S0927650510002410/1-s2.0-S0927650510002410-main.pdf?_tid=8b6d08f4-f73e-11e1-a89d-00000aacb361&acdnat=1346838559_75709ebb186e045770ce62614b4926c0
dc.language.isoenen_US
dc.publisherElsevier Scienceen_US
dc.subjectGamma-rays: observations – Dwarf spheroidal galaxyen_US
dc.subjectdark matteren_US
dc.subjectSommerfeld enhancementen_US
dc.subjectinternal Bremstrahlungen_US
dc.subjectSculptoren_US
dc.subjectCarinaen_US
dc.titleH.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxiesen_US
dc.typeArticleen_US


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