%0 Journal Article
%T A search for a dark matter annihilation signal towards the Canis Major overdensity with H.E.S.S
%+ Centre d'étude spatiale des rayonnements (CESR)
%+ Laboratoire Univers et Théories (LUTH (UMR_8102))
%+ Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU)
%+ Laboratoire d'Astrophysique de Grenoble (LAOG)
%+ Laboratoire Leprince-Ringuet (LLR)
%+ Laboratoire d'Annecy de Physique des Particules (LAPP)
%+ APC - Astrophysique des Hautes Energies (APC - AHE)
%+ AstroParticule et Cosmologie (APC (UMR_7164))
%+ Laboratoire de Physique Théorique et Astroparticules (LPTA)
%+ Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE)
%A Aharonian, F.
%A Akhperjanian, A.G.
%A Barres de Almeida, U.
%A Bazer-Bachi, A.R.
%A Behera, B.
%A Beilicke, M.
%A Benbow, W.
%A Bernlöhr, K.
%A Boisson, C.
%A Borrel, V.
%A Braun, I.
%A Brion, E.
%A Brucker, J.
%A Bühler, R.
%A Bulik, T.
%A Büsching, I.
%A Boutelier, T.
%A Carrigan, S.
%A Chadwick, P.M.
%A Chaves, R.
%A Chounet, L.-M.
%A Coignet, G.
%A Cornils, R.
%A Costamante, L.
%A Dalton, M.
%A Degrange, B.
%A Dickinson, H.J.
%A Djannati-Ataï, A.
%A Domainko, W.
%A Drury, L.O'C.
%A Dubois, F.
%A Dubus, G.
%A Dyks, J.
%A Egberts, K.
%A Emmanoulopoulos, D.
%A Espigat, P.
%A Farnier, C.
%A Feinstein, F.
%A Fiasson, A.
%A Förster, A.
%A Fontaine, G.
%A Füssling, M.
%A Gabici, S.
%A Gallant, Y.A.
%A Gérard, L.
%A Giebels, B.
%A Glicenstein, J.F.
%A Glück, B.
%A Goret, P.
%A Hadjichristidis, C.
%A Hauser, D.
%A Hauser, M.
%A Heinzelmann, G.
%A Henri, G.
%A Hermann, G.
%A Hinton, J.A.
%A Hoffmann, A.
%A Hofmann, W.
%A Holleran, M.
%A Hoppe, S.
%A Horns, D.
%A Jacholkowska, A.
%A de Jager, O.C.
%A Jung, I.
%A Katarzy'Nski, K.
%A Kendziorra, E.
%A Kerschhaggl, M.
%A Khangulyan, D.
%A Khélifi, B.
%A Keogh, D.
%A Komin, Nu.
%A Kosack, K.
%A Lamanna, G.
%A Latham, I.J.
%A Lenain, J.-P.
%A Lohse, T.
%A Martin, J.M.
%A Martineau-Huynh, O.
%A Marcowith, A.
%A Masterson, C.
%A Maurin, D.
%A Mccomb, T.J.L.
%A Moderski, R.
%A Moulin, Emmanuel
%A Naumann-Godo, M.
%A de Naurois, M.
%A Nedbal, D.
%A Nekrassov, D.
%A Nolan, S.J.
%A Ohm, S.
%A Olive, J.-P.
%A de Oña Wilhelmi, E.
%A Orford, K.J.
%A Osborne, J.L.
%A Ostrowski, M.
%A Panter, M.
%A Pedaletti, G.
%A Pelletier, G.
%A Petrucci, P.-O.
%A Pita, S.
%A Pühlhofer, G.
%A Punch, M.
%A Quirrenbach, A.
%A Raubenheimer, B.C.
%A Raue, M.
%A Rayner, S.M.
%A Renaud, M.
%A Rieger, F.
%A Ripken, J.
%A Rob, L.
%A Rosier-Lees, S.
%A Rowell, G.
%A Rudak, B.
%A Ruppel, J.
%A Sahakian, V.
%A Santangelo, A.
%A Schlickeiser, R.
%A Scöck, F.M.
%A Schröder, R.
%A Schwanke, U.
%A Schwarzburg, S.
%A Schwemmer, S.
%A Shalchi, A.
%A Sol, H.
%A Spangler, D.
%A Stawarz, L.
%A Steenkamp, R.
%A Stegmann, C.
%A Superina, G.
%A Tam, P.H.
%A Tavernet, J.-P.
%A Terrier, R.
%A Marandon, V.
%A van Eldik, C.
%A Vasileiadis, G.
%A Venter, C.
%A Vialle, J.P.
%A Vincent, P.
%A Vivier, M.
%A Völk, H.J.
%A Volpe, F.
%A Wagner, S.J.
%A Ward, M.
%A Zdziarski, A.A.
%A Zech, A.
%< avec comité de lecture
%@ 0004-637X
%J The Astrophysical Journal
%I American Astronomical Society
%V 691
%P 175-181
%8 2009
%D 2009
%Z 0809.3894
%Z 2009ApJ...691..175A
%R 10.1088/0004-637X/691/1/175
%Z Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]Journal articles
%X A search for a dark matter (DM) annihilation signal into $\gamma$-rays toward the direction of the Canis Major (CMa) overdensity is presented. The nature of CMa is still controversial and one scenario represents it as a dwarf galaxy, making it an interesting candidate for DM annihilation searches. A total of 9.6 hours of high quality data were collected with the H.E.S.S. array of Imaging Atmospheric Cherenkov Telescopes (IACTs) and no evidence for a very high energy $\gamma$-ray signal is found. Upper limits on the CMa dwarf galaxy mass of the order of 10$^{9}$ M$_{\odot}$ are derived at the 95% C.L. assuming neutralino masses in the range 500 GeV - 10 TeV and relatively large annihilation cross-sections. Constraints on the velocity-weighted annihilation cross section $<\sigma v>$, are calculated for specific WIMP scenarios, using a NFW model for the DM halo profile and taking advantage of numerical simulations of hierarchical structure formation. 95% C.L. exclusion limits of the order of 5 $\times$ 10$^{-24}$ cm$^{3}$ s$^{-1}$ are reached in the 500 GeV - 10 TeV DM particle mass interval, assuming a total halo mass of 3 $\times$ 10$^{8}$ M$_{\odot}$.
%G English
%Z HESS
%L in2p3-00324687
%U https://hal.in2p3.fr/in2p3-00324687
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