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dc.contributor.authorArlen, T.
dc.contributor.authorAune, T.
dc.contributor.authorBeilicke, M.
dc.contributor.authorBenbow, W.
dc.contributor.authorBouvier, A.
dc.contributor.authorBuckley, J. H.
dc.contributor.authorBugaev, V.
dc.contributor.authorCesarini, A.
dc.contributor.authorCiupik, L.
dc.contributor.authorConnolly, M. P.
dc.contributor.authorCui, W.
dc.contributor.authorDickherber, R.
dc.contributor.authorDumm, J.
dc.contributor.authorErrando, M.
dc.contributor.authorFalcone, A.
dc.contributor.authorFederici, S.
dc.contributor.authorFeng, Q.
dc.contributor.authorFinley, J. P.
dc.contributor.authorFinnegan, G.
dc.contributor.authorFortson, L.
dc.contributor.authorFurniss, A.
dc.contributor.authorGalante, N.
dc.contributor.authorGall, D.
dc.contributor.authorGriffin, S.
dc.contributor.authorGrube, J.
dc.contributor.authorGyuk, G.
dc.contributor.authorHanna, D.
dc.contributor.authorHolder, J.
dc.contributor.authorHumensky, T. B.
dc.contributor.authorKaaret, P.
dc.contributor.authorKarlsson, N.
dc.contributor.authorKertzman, M.
dc.contributor.authorKhassen, Y.
dc.contributor.authorKieda, D.
dc.contributor.authorKrawczynski, H.
dc.contributor.authorKrennrich, F.
dc.contributor.authorMaier, G.
dc.contributor.authorMoriarty, P.
dc.contributor.authorMukherjee, R.
dc.contributor.authorNelson, T.
dc.contributor.authorO'Faoláin de Bhróithe, A.
dc.contributor.authorOng, R. A.
dc.contributor.authorOrr, M.
dc.contributor.authorPark, N.
dc.contributor.authorPerkins, J. S.
dc.contributor.authorPichel, A.
dc.contributor.authorPohl, M.
dc.contributor.authorProkoph, H.
dc.contributor.authorQuinn, J.
dc.contributor.authorRagan, K.
dc.contributor.authorReyes, L. C.
dc.contributor.authorReynolds, P. T.
dc.contributor.authorRoache, E.
dc.contributor.authorSaxon, D. B.
dc.contributor.authorSchroedter, M.
dc.contributor.authorSembroski, G. H.
dc.contributor.authorStaszak, D.
dc.contributor.authorTelezhinsky, I.
dc.contributor.authorTešić, G.
dc.contributor.authorTheiling, M.
dc.contributor.authorTsurusaki, K.
dc.contributor.authorVarlotta, A.
dc.contributor.authorVincent, S.
dc.contributor.authorWakely, S. P.
dc.contributor.authorWeekes, T. C.
dc.contributor.authorWeinstein, A.
dc.contributor.authorWelsing, R.
dc.contributor.authorWilliams, D. A.
dc.contributor.authorZitzer, B.
dc.contributor.authorJorstad, S. G.
dc.contributor.authorMacDonald, N. R.
dc.contributor.authorMarscher, A. P.
dc.contributor.authorSmith, P. S.
dc.contributor.authorWalker, R. C.
dc.contributor.authorHovatta, T.
dc.contributor.authorRichards, J.
dc.contributor.authorMax-Moerbeck, W.
dc.contributor.authorReadhead, A.
dc.contributor.authorLister, M. L.
dc.contributor.authorKovalev, Y. Y.
dc.contributor.authorPushkarev, A. B.
dc.contributor.authorGurwell, M. A.
dc.contributor.authorLähteenmäki, A.
dc.contributor.authorNieppola, E.
dc.contributor.authorTornikoski, M.
dc.contributor.authorJärvelä, E.
dc.contributor.author,
dc.date.accessioned2018-09-20T16:00:08Z
dc.date.available2018-09-20T16:00:08Z
dc.date.issued2012-12-19
dc.identifier.citationArlen, T. Aune, T.; Beilicke, M.; Benbow, W.; Bouvier, A.; Buckley, J. H.; Bugaev, V.; Cesarini, A.; Ciupik, L.; Connolly, M. P.; Cui, W.; Dickherber, R.; Dumm, J.; Errando, M.; Falcone, A.; Federici, S.; Feng, Q.; Finley, J. P.; Finnegan, G.; Fortson, L.; Furniss, A.; Galante, N.; Gall, D.; Griffin, S.; Grube, J.; Gyuk, G.; Hanna, D.; Holder, J.; Humensky, T. B.; Kaaret, P.; Karlsson, N.; Kertzman, M.; Khassen, Y.; Kieda, D.; Krawczynski, H.; Krennrich, F.; Maier, G.; Moriarty, P.; Mukherjee, R.; Nelson, T.; O'Faoláin de Bhróithe, A.; Ong, R. A.; Orr, M.; Park, N.; Perkins, J. S.; Pichel, A.; Pohl, M.; Prokoph, H.; Quinn, J.; Ragan, K.; Reyes, L. C.; Reynolds, P. T.; Roache, E.; Saxon, D. B.; Schroedter, M.; Sembroski, G. H.; Staszak, D.; Telezhinsky, I.; Tešić, G.; Theiling, M.; Tsurusaki, K.; Varlotta, A.; Vincent, S.; Wakely, S. P.; Weekes, T. C.; Weinstein, A.; Welsing, R.; Williams, D. A.; Zitzer, B.; Jorstad, S. G.; MacDonald, N. R.; Marscher, A. P.; Smith, P. S.; Walker, R. C.; Hovatta, T.; Richards, J.; Max-Moerbeck, W.; Readhead, A.; Lister, M. L.; Kovalev, Y. Y.; Pushkarev, A. B.; Gurwell, M. A.; Lähteenmäki, A.; Nieppola, E.; Tornikoski, M.; Järvelä, E.; , (2012). Rapid tev gamma-ray flaring of bl lacertae. The Astrophysical Journal 762 (2),
dc.identifier.issn0004-637X,1538-4357
dc.identifier.urihttp://hdl.handle.net/10379/10293
dc.description.abstractWe report on the detection of a very rapid TeV gamma-ray flare from BL Lacertae on 2011 June 28 with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The flaring activity was observed during a 34.6 minute exposure, when the integral flux above 200 GeV reached (3.4 +/- 0.6) x 10(-6) photons m(-2) s(-1), roughly 125% of the Crab Nebula flux measured by VERITAS. The light curve indicates that the observations missed the rising phase of the flare but covered a significant portion of the decaying phase. The exponential decay time was determined to be 13 +/- 4 minutes, making it one of the most rapid gamma-ray flares seen from a TeV blazar. The gamma-ray spectrum of BL Lacertae during the flare was soft, with a photon index of 3.6 +/- 0.4, which is in agreement with the measurement made previously by MAGIC in a lower flaring state. Contemporaneous radio observations of the source with the Very Long Baseline Array revealed the emergence of a new, superluminal component from the core around the time of the TeV gamma-ray flare, accompanied by changes in the optical polarization angle. Changes in flux also appear to have occurred at optical, UV, and GeV gamma-ray wavelengths at the time of the flare, although they are difficult to quantify precisely due to sparse coverage. A strong flare was seen at radio wavelengths roughly four months later, which might be related to the gamma-ray flaring activities. We discuss the implications of these multiwavelength results.
dc.publisherIOP Publishing
dc.relation.ispartofThe Astrophysical Journal
dc.subjectgalaxies: active
dc.subjectgalaxies: individual (bl lacertae, ver j2202+422)
dc.subjectgamma rays: galaxies
dc.subjectactive galactic nuclei
dc.subjectswift ultraviolet/optical telescope
dc.subjectmultiwavelength observations
dc.subjectpolarimetric observations
dc.subjectrelativistic jets
dc.subjecthigh-frequencies
dc.subjectradio-sources
dc.subjectpks 1222+216
dc.subjectblazars
dc.subjectvariability
dc.titleRapid tev gamma-ray flaring of bl lacertae
dc.typeArticle
dc.identifier.doi10.1088/0004-637x/762/2/92
dc.local.publishedsourcehttp://iopscience.iop.org/article/10.1088/0004-637X/762/2/92/pdf
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