%0 Journal Article %T Discovery of very high energy gamma-ray emission from Centaurus A with H.E.S.S. %+ Centre d'étude spatiale des rayonnements (CESR) %+ AstroParticule et Cosmologie (APC (UMR_7164)) %+ 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 de Physique Nucléaire et de Hautes Énergies (LPNHE) %+ Laboratoire Leprince-Ringuet (LLR) %+ Laboratoire d'Annecy de Physique des Particules (LAPP) %+ APC - Astrophysique des Hautes Energies (APC - AHE) %+ Laboratoire de Physique Théorique et Astroparticules (LPTA) %A Aharonian, F. %A Akhperjanian, A.G. %A Anton, G. %A Barres de Almeida, U. %A Bazer-Bachi, A.R. %A Becherini, Y. %A Behera, B. %A Benbow, W. %A Bernlöhr, K. %A Boisson, C. %A Bochow, A. %A Borrel, V. %A Brion, E. %A Brucker, J. %A Brun, P. %A Bühler, R. %A Bulik, T. %A Büsching, I. %A Boutelier, T. %A Chadwick, P.M. %A Charbonnier, A. %A Chaves, R.C.G. %A Cheesebrough, A. %A Chounet, L.-M. %A Clapson, A.C. %A Coignet, G. %A Dalton, M. %A Daniel, M.K. %A Davids, I.D. %A Degrange, B. %A Deil, C. %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 Dyrda, M. %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 Göhring, D. %A Hauser, D. %A Hauser, M. %A Heinz, S. %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 Jahn I. Jung, C. %A Katarzy'Nski, K. %A Katz, U. %A Kaufmann, S. %A Kendziorra, E. %A Kerschhaggl, M. %A Khangulyan, D. %A Khélifi, B. %A Keogh, D. %A Klu'Zniak, W. %A Kneiske, T. %A Komin, Nu. %A Kosack, K. %A Lamanna, G. %A Latham, I.J. %A Lenain, J.-P. %A Lohse, T. %A Marandon, V. %A Martin, J.M. %A Martineau-Huynh, O. %A Marcowith, A. %A Maurin, D. %A Mccomb, T.J.L. %A Medina, M.C. %A Moderski, R. %A Moulin, Emmanuel %A Naumann-Godo, M. %A de Naurois, M. %A Nedbal, D. %A Nekrassov, D. %A Niemiec, J. %A Nolan, S.J. %A Ohm, S. %A Olive, J.-F. %A de Oña Wilhelmi, E. %A Orford, K.J. %A Ostrowski, M. %A Panter, M. %A Paz Arribas, 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 Rulten, C.B. %A Ruppel, J. %A Sahakian, V. %A Santangelo, A. %A Schlickeiser, R. %A Schöck, F.M. %A Schröder, R. %A Schwanke, U. %A Schwarzburg, S. %A Schwemmer, S. %A Shalchi, A. %A Sikora, M. %A Skilton, J.L. %A Sol, H. %A Spangler, D. %A Stawarz, Ł. %A Steenkamp, R. %A Stegmann, C. %A Superina, G. %A Szostek, A. %A Tam, P.H. %A Tavernet, J.-P. %A Terrier, R. %A Tibolla, O. %A Tluczykont, M. %A van Eldik, C. %A Vasileiadis, G. %A Venter, C. %A Venter, L. %A Vialle, J.P. %A Vincent, P. %A Vink, J. %A Vivier, M. %A Völk, H.J. %A Volpe, F. %A Wagner, S.J. %A Ward, M. %A Zdziarski, A.A. %A Zech, A. %Z 5 pages, 4 figures, accepted for publication in ApJ Letters %< avec comité de lecture %@ 2041-8205 %J The Astrophysical journal letters %I Bristol : IOP Publishing %V 695 %P L40-L44 %8 2009 %D 2009 %Z 0903.1582 %Z 2009ApJ...695L..40A %R 10.1088/0004-637X/695/1/L40 %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]Journal articles %X We report the discovery of faint very high energy (VHE, E>100 GeV) gamma-ray emission from the radio galaxy Centaurus A in observations performed with the H.E.S.S. experiment, an imaging atmospheric Cherenkov telescope array consisting of four telescopes located in Namibia. Centaurus A has been observed for more than 120 h. A signal with a statistical significance of 5.0 sigma is detected from the region including the radio core and the inner kpc jets. The integral flux above an energy threshold of ~250 GeV is measured to be ~0.8 % of the flux of the Crab Nebula (apparent luminosity: L(>250 GeV)~2.6x10^39 erg s^-1, adopting a distance of 3.8 Mpc. The spectrum can be described by a power law with a photon index of 2.7 +/- 0.5_stat +/- 0.2_sys. No significant flux variability is detected in the data set. However, the low flux only allows detection of variability on the timescale of days to flux increments above a factor of ~15-20 (3 sigma and 4 sigma, respectively). The discovery of VHE gamma-ray emission from Centaurus A reveals particle acceleration in the source to >TeV energies and, together with M 87, establishes radio galaxies as a class of VHE emitters. %G English %Z HESS %L in2p3-00367126 %U https://in2p3.hal.science/in2p3-00367126 %~ IN2P3 %~ OBSPM %~ CEA %~ INSU %~ METEO %~ UNIV-PARIS7 %~ X %~ UNIV-SAVOIE %~ UPMC %~ UNIV-TLSE3 %~ UGA %~ LPTA %~ LAPP %~ LLR %~ LPNHE %~ APC %~ CNRS %~ UNIV-GRENOBLE1 %~ UNIV-MONTP2 %~ CNES %~ OSUG %~ LUTH %~ OMP %~ OMP-CESR %~ X-LLR %~ LAOG %~ X-DEP %~ X-DEP-PHYS %~ DSM-IRFU %~ IRFU-APC %~ PSL %~ UPMC_POLE_2 %~ UNIV-MONTPELLIER %~ CEA-DRF %~ SORBONNE-UNIVERSITE %~ SU-SCIENCES %~ UNIV-PARIS %~ UP-SCIENCES %~ OBSPM-PSL %~ USMB-COMUE %~ SU-TI %~ ALLIANCE-SU %~ UNIV-UT3 %~ UT3-INP %~ UT3-TOULOUSEINP %~ UM1-UM2 %~ LPNHE-2 %~ TEST-SEBASTIEN3