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          Institute: MPI für Kernphysik     Collection: High-Energy Astrophysics     Display Documents



  history
ID: 396177.0, MPI für Kernphysik / High-Energy Astrophysics
H.E.S.S. discovers VHE gamma-rays from the BL Lac RGB J0152+017
Authors:Nedbal, Dalibor; Benbow, Wystan; Costamante, Luigi; Giebels, Berrie; Kaufmann, Sarah; Raue, Martin; Rob, Ladislav; Wagner, Stefan; Aharonian, F.; Bolz, O.; Borrel, V.; Braun, I.; Brion, E.; Brown, A. M.; Bühler, R.; Bulik, T.; Busching, I.; Boutelier, T.; Carrigan, S.; Chadwick, P. M.; Chounet, L. M.; Clapson, A. C.; Coignet, G.; Cornils, R.; Dalton, M.; Degrange, B.; Dickinson, H. J.; Djannati-Atai, A.; Domainko, W.; Drury, L. O.; Dubois, F.; Dubus, G.; Dyks, J.; Egberts, K.; Emmanoulopoulos, D.; Espigat, P.; Farnier, C.; Feinstein, F.; Fiasson, A.; Förster, A.; Fontaine, G.; Funk, S.; Fussling, M.; Gallant, Y. A.; Glicenstein, J. F.; Gluck, B.; Goret, P.; Hadjichristidis, C.; Hauser, D.; Hauser, M.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J. A.; Hoffmann, A.; Hofmann, W.; Holleran, M.; Hoppe, S.; Horns, D.; Jacholkowska, A.; de Jager, O. C.; Jung, I.; Katarzynski, K.; Kendziorra, E.; Kerschhaggl, M.; Khelifi, B.; Keogh, D.; Komin, N.; Kosack, K.; Lamanna, G.; Latham, I. J.; Lemiere, A.; Lemoine-Goumard, M.; Lenain, J. P.; Lohse, T.; Martin, J. M.; Martineau-Huynh, O.; Marcowith, A.; Masterson, C.; Maurin, D.; Maurin, G.; McComb, T. J. L.; Moderski, R.; Moulin, E.; de Naurois, M.; Nolan, S. J.; Ohm, S.; Olive, J. P.; Wilhelmi, E. D.; Orford, K. J.; Osborne, J. L.; Ostrowski, M.; Panter, M.; Pedaletti, G.; Pelletier, G.; Petrucci, P. O.; Pita, S.; Puhlhofer, G.; Punch, M.; Ranchon, S.; Raubenheimer, B. C.; Rayner, S. M.; Renaud, M.; Ripken, J.; L.; Rolland, L.; Rosier-Lees, S.; Rowell, G.; Rudak, B.; Ruppel, J.; Sahakian, V.; Santangelo, A.; Schlickeiser, R.; Schock, F.; Schroder, R.; Schwanke, U.; Schwarzburg, S.; Schwemmer, S.; Shalchi, A.; Sol, H.; Spangler, D.; Stawarz, L.; Steenkamp, R.; Stegmann, C.; Superina, G.; Tam, P. H.; Tavernet, J. P.; Terrier, R.; van Eldik, C.; Vasileiadis, G.; Venter, C.; Vialle, J. P.; Vincent, P.; Vivier, M.; Völk, H. J.; Volpe, F.; Ward, M.; Zdziarski, A. A.; Zech, A.; Akhperjanian, A.G.; Bazer-Bachi, A.R.; Beilicke, M.; Berge, D.; Bernloehr, K.; Boisson, C
Language:English
Date of Publication (YYYY-MM-DD):2007-11-21
Title of Journal:The Astronomer's Telegram
Volume:2007
Sequence Number of Article:1295
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We report on the H.E.S.S. discovery of VHE gamma-rays from the BL Lac object RGB J0152+017. H.E.S.S. observed the source from Oct 30 to Nov 14, 2007 for a total of ~14h live time. A preliminary on-site analysis resulted in a ~7 sigma detection of the source with an average flux level of ~2% Crab above 250 GeV. On the night Nov 12-13 the source showed indication for a higher flux state resulting in a ~5 sigma detection in less than 2h observation time. SWIFT and RXTE ToO observations yielded a detection with both instruments at the ~1 mCrab level (2-10 keV). Due to observing restrictions, the source could not be observed after Nov 13-14. We encourage other observatories to conduct follow up observations of the source to confirm a possible high VHE flux state and to collect a MWL data-sample of this newly detected VHE source.
Free Keywords:Hess, GeV, AGN
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of W. Hofmann/Experimental High-Energy Astrophysics (M. Panter, G. Hermann)
MPI für Kernphysik/Group of W. Hofmann/High Energy Astrophysics (F. Aharonian)
External Affiliations:Dalibor Nedbal (Prague University), Wystan Benbow (Max-Planck-Institut fuer Kernphysik, now at Harvard-Smithsonian Center for Astrophysics), Luigi Costamante (Max-Planck-Institut fuer Kernphysik, now at HEPL/KIPAC), Berrie Giebels (Laboratoire Leprince Ringuet - IN2P3/CNRS), Sarah Kaufmann (Landessternwarte Heidelberg), Martin Raue (Max-Planck-Institut fuer Kernphysik), Ladislav Rob (Prague University), Stefan Wagner (Landessternwarte Heidelberg), on behalf of the H.E.S.S. (High Energy Stereoscopic System) collaboration
Yerevan Phys Inst, Yerevan 375036, Armenia.; CNRS, UPS, Ctr Etud Spatiale Rayonnements, Toulouse, France.; Univ Hamburg, Inst Exptphys, Hamburg, Germany.; Humboldt Univ, Inst Phys, Berlin, Germany.; Univ Paris Diderot, CNRS, LUTH, Observ Paris, Meudon, France.; Univ Durham, Dept Phys, Durham, England.; NW Univ, Unit Space Phys, Potchefstroom, South Africa.; IN2P3, CNRS, Ecole Polytech, Lab Leprince Ringuet, Palaiseau, France.; IN2P3, CNRS, Lab Annecy Le Vieux Phys Particules, Annecy Le Vieux, France.; Univ Paris 07, CNRS, Paris, France.; Univ Paris 07, CEA, CNRS, Observ Paris, F-75221 Paris, France.; Dublin Inst Adv Studies, Dublin 4, Ireland.; Univ Heidelberg, Landessternwarte Konigstuhl, Heidelberg, Germany.; Univ Montpellier 2, IN2P3, CNRS, Lab Phys Theor & Astroparticlues, Montpellier, France.; Univ Erlangen Nurnberg, Inst Phys, D-8520 Erlangen, Germany.; Univ Grenoble 1, CNRS, INSU, Lab Astrophys Grenoble, Grenoble, France.; Univ Tubingen, Inst Astron & Astrophys, Tubingen, Germany.; Univ Denis Diderot Paris 7, CNRS, IN2P3, LPNHE, Paris, France.; Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France.; Charles Univ Prague, Inst Particle & Nucl Phys, Prague, Czech Republic.; Ruhr Univ Bochum, Lehrstruhl Weltraum & Astrpohys 4, Inst Theoret Phys, D-44780 Bochum, Germany.; Univ Namibia, Windhoek, Namibia.; Uniwersytet Jagiellonski, Obserwatorium Astron, Krakow, Poland.; Nicolaus Copernicus Astron Ctr, Warsaw, Poland.; Univ Leeds, Sch Phys & Astron, Leeds, W Yorkshire, England.; Univ Adelaide, Sch Chem & Phys, Adelaide, SA, Australia.; Nicholas Copernicus Univ, Torun Ctr Astron, Torun, Poland.
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