%0 Journal Article %T Very high energy gamma rays from the composite SNR G0.9+0.1 %+ Physique Corpusculaire et Cosmologie (PCC (UMR 7553)) %+ AstroParticule et Cosmologie (APC (UMR_7164)) %+ Laboratoire de Physique Théorique et Astroparticules (LPTA) %+ Laboratoire Leprince-Ringuet (LLR) %+ Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE) %A Aharonian, F. %A Akhperjanian, A.G. %A Aye, K.-M. %A Bazer-Bachi, A.R. %A Beilicke, M. %A Benbow, W. %A Berge, D. %A Berghaus, P. %A Bernlohr, K. %A Boisson, C. %A Bolz, O. %A Borgneier, C. %A Bruan, I. %A Breitling, F. %A Brown, A.M. %A Bussons Gordo, J. %A Chadwick, P.M. %A Chounet, L.-M. %A Cornils, R. %A Costamante, L. %A Degrange, B. %A Djannati-Ataï, A. %A Drury, L.O'C. %A Dubus, G. %A Ergin, T. %A Espigat, P. %A Feinstein, F. %A Fleury, P. %A Fontaine, G. %A Funk, S. %A Gallant, Y. %A Giebels, B. %A Gillessen, S. %A Goret, P. %A Hadjichristidis, C. %A Hauser, M. %A Heinzelmann, G. %A Henri, G. %A Hermann, G. %A Hofmann, W. %A Holleran, M. %A Horns, D. %A de Jager, O.C. %A Jung, I. %A Khelifi, B. %A Komin, Nu. %A Konopelko, A. %A Latham, I.J. %A Le Gallou, R. %A Lemière, A. %A Lemoine, M. %A Leroy, N. %A Lohse, T. %A Marcowith, A. %A Masterson, C. %A Mccomb, T.J.L. %A de Naurois, M. %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 Pohl, M. %A Puhlhofer, G. %A Punch, M. %A Raubenheimer, B.C. %A Raue, M. %A Raux, J. %A Rayner, S.M. %A Redondo, I. %A Reimer, A. %A Reimer, O. %A Ripken, J. %A Rob, L. %A Rolland, L. %A Rowell, G. %A Sahakian, V. %A Sauge, L. %A Schlenker, S. %A Schlickeiser, R. %A Schuster, C. %A Schwanke, U. %A Siewert, M. %A Sol, H. %A Steenkamp, R. %A Stegmann, C. %A Tavernet, J.-P. %A Terrier, R. %A Théoret, C.G. %A Tluczykont, M. %A Vasileiadis, G. %A Venter, C. %A Vincent, P. %A Visser, B. %A Volk, H.J. %A Wagner, S.J. %< avec comité de lecture %Z APC-PCC 05-02 %@ 0004-6361 %J Astronomy and Astrophysics - A&A %I EDP Sciences %V 432 %P L25-L29 %8 2005 %D 2005 %Z astro-ph/0501265 %R 10.1051/0004-6361:200500022 %K ISM: supernova remnants %K ISM: individual objects: G 0.9+0.1 %K gamma-rays: observations %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 Very high energy (> 100 GeV) gamma-ray emission has been detected for the first time from the composite supernova remnant G0.9+0.1 using the H.E.S.S. instrument. The source is detected with a significance of 13 sigma, and a photon flux above 200 GeV of (5.7+/-0.7 stat +/- 1.2 sys) * 10^-12 cm^-2 s^-1, making it one of the weakest sources ever detected at TeV energies. The photon spectrum is compatible with a power law (dN/dE \propto E^-Gamma) with photon index Gamma = 2.40 +/- 0.11 stat +/- 0.20 sys. The gamma-ray emission appears to originate in the plerionic core of the remnant, rather than the shell, and can be plausibly explained as inverse Compton scattering of relativistic electrons. %G English %Z HESS %L in2p3-00023664 %U https://in2p3.hal.science/in2p3-00023664 %~ IN2P3 %~ OBSPM %~ CEA %~ UNIV-PARIS7 %~ X %~ UPMC %~ LPTA %~ LLR %~ LPNHE %~ PCC %~ APC %~ CNRS %~ CDF %~ UNIV-MONTP2 %~ X-LLR %~ 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 %~ CDF-PSL %~ SU-TI %~ ALLIANCE-SU %~ UM1-UM2 %~ LPNHE-2