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25 April 2024

» arxiv » 0910.3750

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Multiwavelength observations of a TeV-Flare from W Comae
VERITAS collaboration ; V. A. Acciari ; E. Aliu ; T. Aune ; M. Beilicke ; W. Benbow ; M. Bottcher ; D. Boltuch ; J.H. Buckley ; S. M. Bradbury ; V. Bugaev ; K. Byrum ; A. Cannon ; A. Cesarini ; L. Ciupik ; P. Cogan ; W. Cui ; R. Dickherber ; C. Duke ; A. Falcone ; J. P. Finley ; P. Fortin ; L. Fortson ; A. Furniss ; N. Galante ; D. Gall ; K. Gibbs ; G. H. Gillanders ; J. Grube ; R. Guenette ; G. Gyuk ; D. Hanna ; J. Holder ; C. M. Hui ; T. B. Humensky ; P. Kaaret ; N. Karlsson ; M. Kertzman ; D. Kieda ; A. Konopelko ; H. Krawczynski ; F. Krennrich ; M. J. Lang ; S. LeBohec ; G. Maier ; S. McArthur ; A. McCann ; M. McCutcheon ; J. Millis ; P. Moriarty ; R. A. Ong ; A. N. Otte ; D. Pandel ; J. S. Perkins ; A. Pichel ; M. Pohl ; J. Quinn ; K. Ragan ; L. C. Reyes ; P. T. Reynolds ; E. Roache ; H. J. Rose ; G. H.Sembroski ; A. W. Smith ; D. Steele ; M. Theiling ; S. Thibadeau ; A. Varlotta ; V. V. Vassiliev ; S. Vincent ; S. P. Wakely ; J. E. Ward ; T. C. Weekes ; A. Weinstein ; T. Weisgarber ; D. A. Williams ; S. Wissel ; M. Wood ; AGILE Team ; E. Pian ; S. Vercellone ; I. Donnarumma ; F. D'Ammando ; A. Bulgarelli ; A. W. Chen ; A. Giuliani ; F. Longo ; L. Pacciani ; G. Pucella ; V. Vittorini ; M. Tavani ; A. Argan ; G. Barbiellini ; P. Caraveo ; P. W. Cattaneo ; V. Cocco ; E. Costa ; E. Del Monte ; G. De Paris ; G. Di Cocco ; Y. Evangelista ; M. Feroci ; M. Fiorini ; T. Froysland ; M. Frutti ; F. Fuschino ; M. Galli ; F. Gianotti ; C. Labanti ; I. Lapshov ; F. Lazzarotto ; P. Lipari ; M. Marisaldi ; M. Mastropietro ; S. Mereghetti ; E. Morelli ; A. Morselli ; A. Pellizzoni ; F. Perotti ; G. Piano ; P. Picozza ; M. Pilia ; G. Porrovecchio ; M. Prest ; M. Rapisarda ; A. Rappoldi ; A. Rubini ; S. Sabatini P. Soffitta ; M. Trifoglio ; A. Trois ; E. Vallazza ; A. Zambra ; D. Zanello ; C. Pittori ; P. Santolamazza ; F. Verrecchia ; P. Giommi ; S. Colafrancesco ; L. Salotti ; M. Villata ; C. M. Raiteri ; H. D. Aller ; M. F. Aller ; A. A. Arkharov ; N. V. Efimova ; V. M. Larionov ; P. Leto ; R. Ligustri ; E. Lindfors ; M. Pasanen ; O. M. Kurtanidze ; S. D. Tetradze ; A. Lahteenmaki ; M. Kotiranta ; A. Cucchiara ; P. Romano ; R. Nesci ; T. Pursimo ; J. Heidt ; E. Benitez ; D. Hiriart ; K. Nilsson ; A. Berdyugin ; R. Mujica ; D. Dultzin ; J.M. Lopez ; M. Mommert ; M. Sorcia ; I. de la Calle Perez ;
Date:	20 Oct 2009
Abstract:	We report results from an intensive multiwavelength campaign on the intermediate-frequency-peaked BL Lacertae object W Com (z=0.102) during a strong outburst of very high energy gamma-ray emission in June 2008. The very high energy gamma-ray signal was detected by VERITAS on 2008 June 7-8 with a flux F(>200 GeV) = (5.7+-0.6)x10^-11 cm-2s-1, about three times brighter than during the discovery of gamma-ray emission from W Com by VERITAS in 2008 March. The initial detection of this flare by VERITAS at energies above 200 GeV was followed by observations in high energy gamma-rays (AGILE, E>100 MeV), and X-rays (Swift and XMM-Newton), and at UV, and ground-based optical and radio monitoring through the GASP-WEBT consortium and other observatories. Here we describe the multiwavelength data and derive the spectral energy distribution (SED) of the source from contemporaneous data taken throughout the flare.
Source:	arXiv, 0910.3750
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