Multiwavelength observations of a TeV-Flare from W comae

V. A. Acciari, E. Aliu, T. Aune, M. Beilicke, W. Benbow, M. Böttcher, 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. FinleyP. 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, 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

Research output: Contribution to journalArticle

68 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)612-620
Number of pages9
JournalAstrophysical Journal
Volume707
Issue number1
DOIs
StatePublished - Jan 1 2009

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flares
gamma rays
energy
Global Air Sampling Program
BL Lacertae objects
intermediate frequencies
XMM-Newton telescope
spectral energy distribution
newton
observatories
outburst
observatory
radio
monitoring
x rays

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Acciari, V. A., Aliu, E., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., ... De La Calle Perez, I. (2009). Multiwavelength observations of a TeV-Flare from W comae. Astrophysical Journal, 707(1), 612-620. https://doi.org/10.1088/0004-637X/707/1/612
Acciari, V. A. ; Aliu, E. ; Aune, T. ; Beilicke, M. ; Benbow, W. ; Böttcher, M. ; Boltuch, D. ; Buckley, J. H. ; Bradbury, S. M. ; Bugaev, V. ; Byrum, K. ; Cannon, A. ; Cesarini, A. ; Ciupik, L. ; Cogan, P. ; Cui, W. ; Dickherber, R. ; Duke, C. ; Falcone, A. ; Finley, J. P. ; Fortin, P. ; Fortson, L. ; Furniss, A. ; Galante, N. ; Gall, D. ; Gibbs, K. ; Gillanders, G. H. ; Grube, J. ; Guenette, R. ; Gyuk, G. ; Hanna, D. ; Holder, J. ; Hui, C. M. ; Humensky, T. B. ; Kaaret, P. ; Karlsson, N. ; Kertzman, M. ; Kieda, D. ; Konopelko, A. ; Krawczynski, H. ; Krennrich, F. ; Lang, M. J. ; Lebohec, S. ; Maier, G. ; McArthur, S. ; McCann, A. ; McCutcheon, M. ; Millis, J. ; Moriarty, P. ; Ong, R. A. ; Otte, A. N. ; Pandel, D. ; Perkins, J. S. ; Pichel, A. ; Pohl, M. ; Quinn, J. ; Ragan, K. ; Reyes, L. C. ; Reynolds, P. T. ; Roache, E. ; Rose, H. J. ; Sembroski, G. H. ; Smith, A. W. ; Steele, D. ; Theiling, M. ; Thibadeau, S. ; Varlotta, A. ; Vassiliev, V. V. ; Vincent, S. ; Wakely, S. P. ; Ward, J. E. ; Weekes, T. C. ; Weinstein, A. ; Weisgarber, T. ; Williams, D. A. ; Wissel, S. ; Wood, M. ; Pian, E. ; Vercellone, S. ; Donnarumma, I. ; D'Ammando, F. ; Bulgarelli, A. ; Chen, A. W. ; Giuliani, A. ; Longo, F. ; Pacciani, L. ; Pucella, G. ; Vittorini, V. ; Tavani, M. ; Argan, A. ; Barbiellini, G. ; Caraveo, P. ; Cattaneo, P. W. ; Cocco, V. ; Costa, E. ; Monte, E. Del ; De Paris, G. ; Cocco, G. Di ; Evangelista, Y. ; Feroci, M. ; Fiorini, M. ; Froysland, T. ; Frutti, M. ; Fuschino, F. ; Galli, M. ; Gianotti, F. ; Labanti, C. ; Lapshov, I. ; Lazzarotto, F. ; Lipari, P. ; Marisaldi, M. ; Mastropietro, M. ; Mereghetti, S. ; Morelli, E. ; Morselli, A. ; Pellizzoni, A. ; Perotti, F. ; Piano, G. ; Picozza, P. ; Pilia, M. ; Porrovecchio, G. ; Prest, M. ; Rapisarda, M. ; Rappoldi, A. ; Rubini, A. ; Sabatini, S. ; Soffitta, P. ; Trifoglio, M. ; Trois, A. ; Vallazza, E. ; Zambra, A. ; Zanello, D. ; Pittori, C. ; Santolamazza, P. ; Verrecchia, F. ; Giommi, P. ; Colafrancesco, S. ; Salotti, L. ; Villata, M. ; Raiteri, C. M. ; Aller, H. D. ; Aller, M. F. ; Arkharov, A. A. ; Efimova, N. V. ; Larionov, V. M. ; Leto, P. ; Ligustri, R. ; Lindfors, E. ; Pasanen, M. ; Kurtanidze, O. M. ; Tetradze, S. D. ; Lahteenmaki, A. ; Kotiranta, M. ; Cucchiara, A. ; Romano, P. ; Nesci, R. ; Pursimo, T. ; Heidt, J. ; Benitez, E. ; Hiriart, D. ; Nilsson, K. ; Berdyugin, A. ; Mujica, R. ; Dultzin, D. ; Lopez, J. M. ; Mommert, M. ; Sorcia, M. ; De La Calle Perez, I. / Multiwavelength observations of a TeV-Flare from W comae. In: Astrophysical Journal. 2009 ; Vol. 707, No. 1. pp. 612-620.
@article{6c3756c6b4b540c4ae93b943550d3698,
title = "Multiwavelength observations of a TeV-Flare from W comae",
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.",
author = "Acciari, {V. A.} and E. Aliu and T. Aune and M. Beilicke and W. Benbow and M. B{\"o}ttcher and D. Boltuch and Buckley, {J. H.} and Bradbury, {S. M.} and V. Bugaev and K. Byrum and A. Cannon and A. Cesarini and L. Ciupik and P. Cogan and W. Cui and R. Dickherber and C. Duke and A. Falcone and Finley, {J. P.} and P. Fortin and L. Fortson and A. Furniss and N. Galante and D. Gall and K. Gibbs and Gillanders, {G. H.} and J. Grube and R. Guenette and G. Gyuk and D. Hanna and J. Holder and Hui, {C. M.} and Humensky, {T. B.} and P. Kaaret and N. Karlsson and M. Kertzman and D. Kieda and A. Konopelko and H. Krawczynski and F. Krennrich and Lang, {M. J.} and S. Lebohec and G. Maier and S. McArthur and A. McCann and M. McCutcheon and J. Millis and P. Moriarty and Ong, {R. A.} and Otte, {A. N.} and D. Pandel and Perkins, {J. S.} and A. Pichel and M. Pohl and J. Quinn and K. Ragan and Reyes, {L. C.} and Reynolds, {P. T.} and E. Roache and Rose, {H. J.} and Sembroski, {G. H.} and Smith, {A. W.} and D. Steele and M. Theiling and S. Thibadeau and A. Varlotta and Vassiliev, {V. V.} and S. Vincent and Wakely, {S. P.} and Ward, {J. E.} and Weekes, {T. C.} and A. Weinstein and T. Weisgarber and Williams, {D. A.} and S. Wissel and M. Wood and E. Pian and S. Vercellone and I. Donnarumma and F. D'Ammando and A. Bulgarelli and Chen, {A. W.} and A. Giuliani and F. Longo and L. Pacciani and G. Pucella and V. Vittorini and M. Tavani and A. Argan and G. Barbiellini and P. Caraveo and Cattaneo, {P. W.} and V. Cocco and E. Costa and Monte, {E. Del} and {De Paris}, G. and Cocco, {G. Di} and Y. Evangelista and M. Feroci and M. Fiorini and T. Froysland and M. Frutti and F. Fuschino and M. Galli and F. Gianotti and C. Labanti and I. Lapshov and F. Lazzarotto and P. Lipari and M. Marisaldi and M. Mastropietro and S. Mereghetti and E. Morelli and A. Morselli and A. Pellizzoni and F. Perotti and G. Piano and P. Picozza and M. Pilia and G. Porrovecchio and M. Prest and M. Rapisarda and A. Rappoldi and A. Rubini and S. Sabatini and P. Soffitta and M. Trifoglio and A. Trois and E. Vallazza and A. Zambra and D. Zanello and C. Pittori and P. Santolamazza and F. Verrecchia and P. Giommi and S. Colafrancesco and L. Salotti and M. Villata and Raiteri, {C. M.} and Aller, {H. D.} and Aller, {M. F.} and Arkharov, {A. A.} and Efimova, {N. V.} and Larionov, {V. M.} and P. Leto and R. Ligustri and E. Lindfors and M. Pasanen and Kurtanidze, {O. M.} and Tetradze, {S. D.} and A. Lahteenmaki and M. Kotiranta and A. Cucchiara and P. Romano and R. Nesci and T. Pursimo and J. Heidt and E. Benitez and D. Hiriart and K. Nilsson and A. Berdyugin and R. Mujica and D. Dultzin and Lopez, {J. M.} and M. Mommert and M. Sorcia and {De La Calle Perez}, I.",
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Acciari, VA, Aliu, E, Aune, T, Beilicke, M, Benbow, W, Böttcher, M, Boltuch, D, Buckley, JH, Bradbury, SM, Bugaev, V, Byrum, K, Cannon, A, Cesarini, A, Ciupik, L, Cogan, P, Cui, W, Dickherber, R, Duke, C, Falcone, A, Finley, JP, Fortin, P, Fortson, L, Furniss, A, Galante, N, Gall, D, Gibbs, K, Gillanders, GH, Grube, J, Guenette, R, Gyuk, G, Hanna, D, Holder, J, Hui, CM, Humensky, TB, Kaaret, P, Karlsson, N, Kertzman, M, Kieda, D, Konopelko, A, Krawczynski, H, Krennrich, F, Lang, MJ, Lebohec, S, Maier, G, McArthur, S, McCann, A, McCutcheon, M, Millis, J, Moriarty, P, Ong, RA, Otte, AN, Pandel, D, Perkins, JS, Pichel, A, Pohl, M, Quinn, J, Ragan, K, Reyes, LC, Reynolds, PT, Roache, E, Rose, HJ, Sembroski, GH, Smith, AW, Steele, D, Theiling, M, Thibadeau, S, Varlotta, A, Vassiliev, VV, Vincent, S, Wakely, SP, Ward, JE, Weekes, TC, Weinstein, A, Weisgarber, T, Williams, DA, Wissel, S, Wood, M, Pian, E, Vercellone, S, Donnarumma, I, D'Ammando, F, Bulgarelli, A, Chen, AW, Giuliani, A, Longo, F, Pacciani, L, Pucella, G, Vittorini, V, Tavani, M, Argan, A, Barbiellini, G, Caraveo, P, Cattaneo, PW, Cocco, V, Costa, E, Monte, ED, De Paris, G, Cocco, GD, Evangelista, Y, Feroci, M, Fiorini, M, Froysland, T, Frutti, M, Fuschino, F, Galli, M, Gianotti, F, Labanti, C, Lapshov, I, Lazzarotto, F, Lipari, P, Marisaldi, M, Mastropietro, M, Mereghetti, S, Morelli, E, Morselli, A, Pellizzoni, A, Perotti, F, Piano, G, Picozza, P, Pilia, M, Porrovecchio, G, Prest, M, Rapisarda, M, Rappoldi, A, Rubini, A, Sabatini, S, Soffitta, P, Trifoglio, M, Trois, A, Vallazza, E, Zambra, A, Zanello, D, Pittori, C, Santolamazza, P, Verrecchia, F, Giommi, P, Colafrancesco, S, Salotti, L, Villata, M, Raiteri, CM, Aller, HD, Aller, MF, Arkharov, AA, Efimova, NV, Larionov, VM, Leto, P, Ligustri, R, Lindfors, E, Pasanen, M, Kurtanidze, OM, Tetradze, SD, Lahteenmaki, A, Kotiranta, M, Cucchiara, A, Romano, P, Nesci, R, Pursimo, T, Heidt, J, Benitez, E, Hiriart, D, Nilsson, K, Berdyugin, A, Mujica, R, Dultzin, D, Lopez, JM, Mommert, M, Sorcia, M & De La Calle Perez, I 2009, 'Multiwavelength observations of a TeV-Flare from W comae', Astrophysical Journal, vol. 707, no. 1, pp. 612-620. https://doi.org/10.1088/0004-637X/707/1/612

Multiwavelength observations of a TeV-Flare from W comae. / Acciari, V. A.; Aliu, E.; Aune, T.; Beilicke, M.; Benbow, W.; Böttcher, M.; Boltuch, D.; Buckley, J. H.; Bradbury, S. M.; Bugaev, V.; Byrum, K.; Cannon, A.; Cesarini, A.; Ciupik, L.; Cogan, P.; Cui, W.; Dickherber, R.; Duke, C.; Falcone, A.; Finley, J. P.; Fortin, P.; Fortson, L.; Furniss, A.; Galante, N.; Gall, D.; Gibbs, K.; Gillanders, G. H.; Grube, J.; Guenette, R.; Gyuk, G.; Hanna, D.; Holder, J.; Hui, C. M.; Humensky, T. B.; Kaaret, P.; Karlsson, N.; Kertzman, M.; Kieda, D.; Konopelko, A.; Krawczynski, H.; Krennrich, F.; Lang, M. J.; Lebohec, S.; Maier, G.; McArthur, S.; McCann, A.; McCutcheon, M.; Millis, J.; Moriarty, P.; Ong, R. A.; Otte, A. N.; Pandel, D.; Perkins, J. S.; Pichel, A.; Pohl, M.; Quinn, J.; Ragan, K.; Reyes, L. C.; Reynolds, P. T.; Roache, E.; Rose, H. J.; Sembroski, G. H.; Smith, A. W.; Steele, D.; Theiling, M.; Thibadeau, S.; Varlotta, A.; Vassiliev, V. V.; Vincent, S.; Wakely, S. P.; Ward, J. E.; Weekes, T. C.; Weinstein, A.; Weisgarber, T.; Williams, D. A.; Wissel, S.; Wood, M.; Pian, E.; Vercellone, S.; Donnarumma, I.; D'Ammando, F.; Bulgarelli, A.; Chen, A. W.; Giuliani, A.; Longo, F.; Pacciani, L.; Pucella, G.; Vittorini, V.; Tavani, M.; Argan, A.; Barbiellini, G.; Caraveo, P.; Cattaneo, P. W.; Cocco, V.; Costa, E.; Monte, E. Del; De Paris, G.; Cocco, G. Di; Evangelista, Y.; Feroci, M.; Fiorini, M.; Froysland, T.; Frutti, M.; Fuschino, F.; Galli, M.; Gianotti, F.; Labanti, C.; Lapshov, I.; Lazzarotto, F.; Lipari, P.; Marisaldi, M.; Mastropietro, M.; Mereghetti, S.; Morelli, E.; Morselli, A.; Pellizzoni, A.; Perotti, F.; Piano, G.; Picozza, P.; Pilia, M.; Porrovecchio, G.; Prest, M.; Rapisarda, M.; Rappoldi, A.; Rubini, A.; Sabatini, S.; Soffitta, P.; Trifoglio, M.; Trois, A.; Vallazza, E.; Zambra, A.; Zanello, D.; Pittori, C.; Santolamazza, P.; Verrecchia, F.; Giommi, P.; Colafrancesco, S.; Salotti, L.; Villata, M.; Raiteri, C. M.; Aller, H. D.; Aller, M. F.; Arkharov, A. A.; Efimova, N. V.; Larionov, V. M.; Leto, P.; Ligustri, R.; Lindfors, E.; Pasanen, M.; Kurtanidze, O. M.; Tetradze, S. D.; Lahteenmaki, A.; Kotiranta, M.; Cucchiara, A.; Romano, P.; Nesci, R.; Pursimo, T.; Heidt, J.; Benitez, E.; Hiriart, D.; Nilsson, K.; Berdyugin, A.; Mujica, R.; Dultzin, D.; Lopez, J. M.; Mommert, M.; Sorcia, M.; De La Calle Perez, I.

In: Astrophysical Journal, Vol. 707, No. 1, 01.01.2009, p. 612-620.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Multiwavelength observations of a TeV-Flare from W comae

AU - Acciari, V. A.

AU - Aliu, E.

AU - Aune, T.

AU - Beilicke, M.

AU - Benbow, W.

AU - Böttcher, M.

AU - Boltuch, D.

AU - Buckley, J. H.

AU - Bradbury, S. M.

AU - Bugaev, V.

AU - Byrum, K.

AU - Cannon, A.

AU - Cesarini, A.

AU - Ciupik, L.

AU - Cogan, P.

AU - Cui, W.

AU - Dickherber, R.

AU - Duke, C.

AU - Falcone, A.

AU - Finley, J. P.

AU - Fortin, P.

AU - Fortson, L.

AU - Furniss, A.

AU - Galante, N.

AU - Gall, D.

AU - Gibbs, K.

AU - Gillanders, G. H.

AU - Grube, J.

AU - Guenette, R.

AU - Gyuk, G.

AU - Hanna, D.

AU - Holder, J.

AU - Hui, C. M.

AU - Humensky, T. B.

AU - Kaaret, P.

AU - Karlsson, N.

AU - Kertzman, M.

AU - Kieda, D.

AU - Konopelko, A.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Lebohec, S.

AU - Maier, G.

AU - McArthur, S.

AU - McCann, A.

AU - McCutcheon, M.

AU - Millis, J.

AU - Moriarty, P.

AU - Ong, R. A.

AU - Otte, A. N.

AU - Pandel, D.

AU - Perkins, J. S.

AU - Pichel, A.

AU - Pohl, M.

AU - Quinn, J.

AU - Ragan, K.

AU - Reyes, L. C.

AU - Reynolds, P. T.

AU - Roache, E.

AU - Rose, H. J.

AU - Sembroski, G. H.

AU - Smith, A. W.

AU - Steele, D.

AU - Theiling, M.

AU - Thibadeau, S.

AU - Varlotta, A.

AU - Vassiliev, V. V.

AU - Vincent, S.

AU - Wakely, S. P.

AU - Ward, J. E.

AU - Weekes, T. C.

AU - Weinstein, A.

AU - Weisgarber, T.

AU - Williams, D. A.

AU - Wissel, S.

AU - Wood, M.

AU - Pian, E.

AU - Vercellone, S.

AU - Donnarumma, I.

AU - D'Ammando, F.

AU - Bulgarelli, A.

AU - Chen, A. W.

AU - Giuliani, A.

AU - Longo, F.

AU - Pacciani, L.

AU - Pucella, G.

AU - Vittorini, V.

AU - Tavani, M.

AU - Argan, A.

AU - Barbiellini, G.

AU - Caraveo, P.

AU - Cattaneo, P. W.

AU - Cocco, V.

AU - Costa, E.

AU - Monte, E. Del

AU - De Paris, G.

AU - Cocco, G. Di

AU - Evangelista, Y.

AU - Feroci, M.

AU - Fiorini, M.

AU - Froysland, T.

AU - Frutti, M.

AU - Fuschino, F.

AU - Galli, M.

AU - Gianotti, F.

AU - Labanti, C.

AU - Lapshov, I.

AU - Lazzarotto, F.

AU - Lipari, P.

AU - Marisaldi, M.

AU - Mastropietro, M.

AU - Mereghetti, S.

AU - Morelli, E.

AU - Morselli, A.

AU - Pellizzoni, A.

AU - Perotti, F.

AU - Piano, G.

AU - Picozza, P.

AU - Pilia, M.

AU - Porrovecchio, G.

AU - Prest, M.

AU - Rapisarda, M.

AU - Rappoldi, A.

AU - Rubini, A.

AU - Sabatini, S.

AU - Soffitta, P.

AU - Trifoglio, M.

AU - Trois, A.

AU - Vallazza, E.

AU - Zambra, A.

AU - Zanello, D.

AU - Pittori, C.

AU - Santolamazza, P.

AU - Verrecchia, F.

AU - Giommi, P.

AU - Colafrancesco, S.

AU - Salotti, L.

AU - Villata, M.

AU - Raiteri, C. M.

AU - Aller, H. D.

AU - Aller, M. F.

AU - Arkharov, A. A.

AU - Efimova, N. V.

AU - Larionov, V. M.

AU - Leto, P.

AU - Ligustri, R.

AU - Lindfors, E.

AU - Pasanen, M.

AU - Kurtanidze, O. M.

AU - Tetradze, S. D.

AU - Lahteenmaki, A.

AU - Kotiranta, M.

AU - Cucchiara, A.

AU - Romano, P.

AU - Nesci, R.

AU - Pursimo, T.

AU - Heidt, J.

AU - Benitez, E.

AU - Hiriart, D.

AU - Nilsson, K.

AU - Berdyugin, A.

AU - Mujica, R.

AU - Dultzin, D.

AU - Lopez, J. M.

AU - Mommert, M.

AU - Sorcia, M.

AU - De La Calle Perez, I.

PY - 2009/1/1

Y1 - 2009/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=72849142777&partnerID=8YFLogxK

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U2 - 10.1088/0004-637X/707/1/612

DO - 10.1088/0004-637X/707/1/612

M3 - Article

AN - SCOPUS:72849142777

VL - 707

SP - 612

EP - 620

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

ER -

Acciari VA, Aliu E, Aune T, Beilicke M, Benbow W, Böttcher M et al. Multiwavelength observations of a TeV-Flare from W comae. Astrophysical Journal. 2009 Jan 1;707(1):612-620. https://doi.org/10.1088/0004-637X/707/1/612