%0 Journal Article %T Fast variability of TeV gamma-rays from the radio galaxy M 87 %+ Centre d'étude spatiale des rayonnements (CESR) %+ Laboratoire Univers et Théories (LUTH (UMR_8102)) %+ Laboratoire Leprince-Ringuet (LLR) %+ Laboratoire d'Annecy de Physique des Particules (LAPP) %+ AstroParticule et Cosmologie (APC (UMR_7164)) %+ Laboratoire de Physique Théorique et Astroparticules (LPTA) %+ Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA) %+ Laboratoire d'Astrophysique de Grenoble (LAOG) %+ Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE) %A Aharonian, F. %A Akhperjanian, A.G. %A Bazer-Bachi, A.R. %A Beilicke, M. %A Benbow, W. %A Berge, D. %A Bernlöhr, K. %A Boisson, C. %A Bolz, O. %A Borrel, V. %A Braun, I. %A Brown, A.M. %A Bühler, R. %A Büsching, I. %A Carrigan, S. %A Chadwick, P.M. %A Chounet, L.-M. %A Coignet, G. %A Cornils, R. %A Costamante, L. %A Degrange, B. %A Dickinson, H.J. %A Djannati-Ataï, A. %A O'C. Drury, L. %A Dubus, G. %A Egberts, K. %A Emmanoulopoulos, D. %A Espigat, P. %A Feinstein, F. %A Ferrero, E. %A Fiasson, A. %A Fontaine, G. %A Funk, Seb. %A Funk, S. %A Füssling, M. %A Gallant, Y.A. %A Giebels, B. %A Glicenstein, J.F. %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 Kendziorra, E. %A Kerschhaggl, M. %A Khélifi, B. %A Komin, Nu. %A Konopelko, A. %A Kosack, K. %A Lamanna, G. %A Latham, I.J. %A Le Gallou, R. %A Lemière, A. %A Lemoine-Goumard, M. %A Lenain, J.-P. %A Martin, J.M. %A Martineau-Huynh, O. %A Marcowith, A. %A Masterson, C. %A Maurin, G. %A Mccomb, T.J.L. %A Moulin, Emmanuel %A de Naurois, M. %A Nedbal, D. %A Nolan, S.J. %A Noutsos, A. %A Orford, K.J. %A Osborne, J.L. %A Ouchrif, M. %A Panter, M. %A Pelletier, G. %A Pita, S. %A Pühlhofer, G. %A Punch, M. %A Ranchon, S. %A Raubenheimer, B.C. %A Raue, M. %A Rayner, S.M. %A Reimer, A. %A Ripken, J. %A Rob, L. %A Rolland, L. %A Rosier-Lees, S. %A Rowell, G. %A Sahakian, V. %A Santangelo, A. %A Saugé, L. %A Schlenker, S. %A Schlickeiser, R. %A Schröder, R. %A Schwanke, U. %A Schwarzburg, S. %A Schwemmer, S. %A Shalchi, A. %A Sol, H. %A Spangler, D. %A Spanier, F. %A Steenkamp, R. %A Stegmann, C. %A Superina, G. %A Tam, P.H. %A Tavernet, J.-P. %A Terrier, R. %A Tluczykont, M. %A van Eldik, C. %A Vasileiadis, G. %A Venter, C. %A Vialle, J.P. %A Vincent, P. %A Völk, H.J. %A Wagner, S.J. %A Ward, M. %Z 16 pages, 5 figures %< avec comité de lecture %Z APC-06-78;PTA/06-90 %@ 0036-8075 %J Science %I American Association for the Advancement of Science (AAAS) %V 314 %P 1424-1427 %8 2006 %D 2006 %Z astro-ph/0612016 %R 10.1126/science.1134408 %Z Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] %Z Sciences of the Universe [physics]/Astrophysics [astro-ph]Journal articles %X The detection of fast variations of the TeV (10^12 eV) gamma-ray flux, on time-scales of days, from the nearby radio galaxy M 87 is reported. These variations are ~10 times faster than that observed in any other waveband and imply a very compact emission region with a dimension similar to the Schwarzschild radius of the central black hole. We thus can exclude several other sites and processes of the gamma-ray production. The observations confirm that TeV gamma-rays are emitted by extragalactic sources other than blazars, where jets are not relativistically beamed towards the observer. %G English %Z HESS %L in2p3-00118136 %U https://in2p3.hal.science/in2p3-00118136 %~ 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