Multiwavelength observations of a TeV-Flare from W Comae

Multiwavelength observations of a TeV-Flare from W Comae

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 flu...

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Veröffentlicht in:arXiv.org 2009-10
Hauptverfasser: VERITAS collaboration, Acciari, V A, Beilicke, M, Benbow, W, Bottcher, M, Boltuch, D, Buckley, J H, Bradbury, S M, Cannon, A, Cesarini, A, Ciupik, L, Cogan, P, Dickherber, R, Finley, J P, tin, P, tson, L, Furniss, A, Galante, N, Gall, D, Grube, J, Guenette, R, Gyuk, G, Holder, J, Hui, C M, Humensky, T B, Kaaret, P, Karlsson, N, Kertzman, M, Kieda, D, Konopelko, A, Krennrich, F, Lang, M J, McArthur, S, Otte, A N, Quinn, J, Reyes, L C, Roache, E, Rose, H J, Smith, A W, Theiling, M, Varlotta, A, Vassiliev, V V, Vincent, S, Wakely, S P, Weisgarber, T, Williams, D A, Wood, M, The AGILE Team, Chen, A W, Giuliani, A, Longo, F, Pacciani, L, Pucella, G, Vittorini, V, Tavani, M, Argan, A, Barbiellini, G, Cattaneo, P W, Cocco, V, Costa, E, E Del Monte, De Paris, G, G Di Cocco, Feroci, M, Fiorini, M, Frutti, M, Fuschino, F, Gianotti, F, Labanti, C, Mastropietro, M, Mereghetti, S, Morselli, A, Piano, G, Porrovecchio, G, Rapisarda, M, Rappoldi, A, Rubini, A, S Sabatini P Soffitta, Vallazza, E, Zambra, A, Santolamazza, P, Colafrancesco, S, Villata, M, Aller, H D, Aller, M F, Leto, P, Ligustri, R, Pasanen, M, Lahteenmaki, A, Kotiranta, M, Cucchiara, A, Romano, P, Nesci, R, Heidt, J, Benitez, E, Berdyugin, A, Mujica, R, Lopez, J M, Sorcia, M, I de la Calle Perez
Format: Artikel
Sprache:eng
Schlagworte:
BL Lacertae objects
Consortia
Emission
Gamma rays
Observatories
Physics - High Energy Astrophysical Phenomena
Spectral energy distribution
XMM (spacecraft)
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Zusammenfassung: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.
ISSN:2331-8422
DOI:10.48550/arxiv.0910.3750