%0 Journal Article %T Discovery of a point-like very-high-energy gamma-ray source in Monoceros %+ Centre d'étude spatiale des rayonnements (CESR) %+ Laboratoire Univers et Théories (LUTH (UMR_8102)) %+ Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA) %+ 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. %A Akhperjanian, A.G. %A Bazer-Bachi, A.R. %A Behera, B. %A Beilicke, M. %A Benbow, W. %A Berge, D. %A Bernlohr, K. %A Boisson, C. %A Bolz, O. %A Borrel, V. %A Braun, I. %A Brion, E. %A Brown, A.M. %A Buhler, R. %A Busching, I. %A Boutelier, T. %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-Atai, A. %A Domainko, W. %A Drury, L.O'C. %A Dubus, G. %A Egberts, K. %A Emmanoulopoulos, D. %A Espigat, P. %A Farnier, C. %A Feinstein, F. %A Fiasson, A. %A Forster, A. %A Fontaine, G. %A Funk, Seb. %A Funk, S. %A Fussling, M. %A Gallant, Y.A. %A Giebels, B. %A Glicenstein, J.F. %A Gluck, 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 Kendziorra, E. %A Kerschhaggl, M. %A Khelifi, B. %A Komin, Nu. %A Kosack, K. %A Lamanna, G. %A Latham, I.J. %A Le Gallou, R. %A Lemière, A. %A Lemoine-Goumard, M. %A Lohse, T. %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 Olive, J.-P. %A Orford, K.J. %A Osborne, J.L. %A Panter, M. %A Pedaletti, G. %A Pelletier, G. %A Petrucci, P.-O. %A Pita, S. %A Puhlhofer, G. %A Punch, M. %A Ranchon, S. %A Raubenheimer, B.C. %A Raue, M. %A Rayner, S.M. %A Reimer, O. %A Ripken, J. %A Rob, L. %A Rolland, L. %A Rosier-Lees, S. %A Rowell, G. %A Ruppel, J. %A Sahakian, V. %A Santangelo, A. %A Sauge, L. %A Schlenker, S. %A Schlickeiser, R. %A Schroder, R. %A Schwanke, U. %A Schwarzburg, S. %A Schwemmer, S. %A Shalchi, A. %A Sol, H. %A Spangler, D. %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 Volk, H.J. %A Wagner, S.J. %A Ward, M. %A Moriguchi, Y. %A Fukui, Y. %Z 5 pages, 4 figures, to appear in A&A %< avec comité de lecture %Z PTA/07-13, APC-07-40 %@ 0004-6361 %J Astronomy and Astrophysics - A&A %I EDP Sciences %V 469 %P L1-L4 %8 2007 %D 2007 %Z 0704.0171 %Z 2007arXiv0704.0171A %R 10.1051/0004-6361:20077299 %K Astrophysics %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]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] %Z Sciences of the Universe [physics]/Astrophysics [astro-ph]Journal articles %X The complex Monoceros Loop SNR/Rosette Nebula region contains several potential sources of very-high-energy (VHE) gamma-ray emission and two as yet unidentified high-energy EGRET sources. Sensitive VHE observations are required to probe acceleration processes in this region. The H.E.S.S. telescope array has been used to search for very high-energy gamma-ray sources in this region. CO data from the NANTEN telescope were used to map the molecular clouds in the region, which could act as target material for gamma-ray production via hadronic interactions. We announce the discovery of a new gamma-ray source, HESS J0632+058, located close to the rim of the Monoceros SNR. This source is unresolved by H.E.S.S. and has no clear counterpart at other wavelengths but is possibly associated with the weak X-ray source 1RXS J063258.3+054857, the Be-star MWC 148 and/or the lower energy gamma-ray source 3EG J0634+0521. No evidence for an associated molecular cloud was found in the CO data. %G English %Z HESS %L in2p3-00147240 %U https://hal.in2p3.fr/in2p3-00147240 %~ 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 %~ OMP-IRAP %~ 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