Multiwavelength observations of a TeV-Flare from W comae
Journal
Date Issued
2009
Author(s)
Acciari, V.A.
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Aliu, E.
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Aune, T.
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Beilicke, M.
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Benbow, W.
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Böttcher, M.
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Boltuch, D.
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Buckley, J.H.
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Bradbury, S.M.
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Bugaev, V.
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Byrum, K.
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Froysland, T.
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Frutti, M.
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Galli, M.
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Lapshov, I.
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Lipari, P.
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Cannon, A.
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Mastropietro, M.
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Morelli, E.
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Morselli, A.
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Perotti, F.
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Picozza, P.
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Cesarini, A.
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Porrovecchio, G.
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Prest, M.
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Rapisarda, M.
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Rappoldi, A.
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Rubini, A.
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Sabatini, S.
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Vallazza, E.
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Ciupik, L.
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Zambra, A.
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Zanello, D.
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Santolamazza, P.
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Giommi, P.
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Colafrancesco, S.
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Salotti, L.
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Cogan, P.
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Aller, H.D.
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Aller, M.F.
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Arkharov, A.A.
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Efimova, N.V.
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Larionov, V.M.
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Ligustri, R.
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Lindfors, E.
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Pasanen, M.
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Kurtanidze, O.M.
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Cui, W.
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Tetradze, S.D.
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Lahteenmaki, A.
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Kotiranta, M.
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Cucchiara, A.
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Nesci, R.
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Pursimo, T.
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Heidt, J.
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Benitez, E.
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Hiriart, D.
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Dickherber, R.
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Nilsson, K.
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Berdyugin, A.
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Mujica, R.
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Dultzin, D.
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Lopez, J.M.
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Mommert, M.
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Sorcia, M.
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De La Calle Perez, I.
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Duke, C.
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Falcone, A.
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Finley, J.P.
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Fortin, P.
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Fortson, L.
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Furniss, A.
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Galante, N.
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Gall, D.
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Gibbs, K.
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Gillanders, G.H.
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Grube, J.
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Guenette, R.
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Gyuk, G.
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Hanna, D.
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Holder, J.
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Hui, C.M.
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Humensky, T.B.
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Kaaret, P.
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Karlsson, N.
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Kertzman, M.
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Kieda, D.
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Konopelko, A.
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Krawczynski, H.
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Krennrich, F.
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Lang, M.J.
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Lebohec, S.
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Maier, G.
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McArthur, S.
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McCann, A.
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McCutcheon, M.
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Millis, J.
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Moriarty, P.
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Ong, R.A.
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Otte, A.N.
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Pandel, D.
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Perkins, J.S.
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Pichel, A.
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Pohl, M.
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Quinn, J.
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Ragan, K.
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Reyes, L.C.
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Reynolds, P.T.
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Roache, E.
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Rose, H.J.
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Sembroski, G.H.
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Smith, A.W.
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Steele, D.
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Theiling, M.
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Thibadeau, S.
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Varlotta, A.
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Vassiliev, V.V.
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Vincent, S.
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Wakely, S.P.
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Ward, J.E.
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Weekes, T.C.
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Weinstein, A.
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Weisgarber, T.
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Williams, D.A.
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Wissel, S.
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Wood, M.
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Donnarumma, I.
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Chen, A.W.
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Longo, F.
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Pucella, G.
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Barbiellini, G.
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Cattaneo, P.W.
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Cocco, V.
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Monte, E.D.
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Cocco, G.D.
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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 2008 June. 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) × 10-11 cm-2 s -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 γ≥ 100 MeV), 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 of the source from contemporaneous data taken throughout the flare. © 2009. The American Astronomical Society. All rights reserved.
Volume
707
Issue
1
Start page
612
Issn Identifier
0004-637X
Ads BibCode
2009ApJ...707..612A
Rights
open.access
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