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dc.contributor.authorAbeysekara, A. U.en_US
dc.contributor.authorBenbow, W.en_US
dc.contributor.authorBird, R.en_US
dc.contributor.authorBrantseg, T.en_US
dc.contributor.authorBrose, R.en_US
dc.contributor.authorBuchovecky, M.en_US
dc.contributor.authorBuckley, J. H.en_US
dc.contributor.authorBugaev, V.en_US
dc.contributor.authorConnolly, M. P.en_US
dc.contributor.authorCui, W.en_US
dc.contributor.authorDaniel, M. K.en_US
dc.contributor.authorFalcone, A.en_US
dc.contributor.authorFeng, Q.en_US
dc.contributor.authorFinley, J. P.en_US
dc.contributor.authorFortson, L.en_US
dc.contributor.authorFurniss, A.en_US
dc.contributor.authorGillanders, G. H.en_US
dc.contributor.authorGunawardhana, I.en_US
dc.contributor.authorHuetten, M.en_US
dc.contributor.authorHanna, D.en_US
dc.contributor.authorHervet, O.en_US
dc.contributor.authorHolder, J.en_US
dc.contributor.authorHughes, G.en_US
dc.contributor.authorHumensky, T. B.en_US
dc.contributor.authorJohnson, C. A.en_US
dc.contributor.authorKaaret, P.en_US
dc.contributor.authorKar, P.en_US
dc.contributor.authorKertzman, M.en_US
dc.contributor.authorKrennrich, F.en_US
dc.contributor.authorLang, M. J.en_US
dc.contributor.authorLin, T. T. Y.en_US
dc.contributor.authorMcArthur, S.en_US
dc.contributor.authorMoriarty, P.en_US
dc.contributor.authorMukherjee, R.en_US
dc.contributor.authorO'Brien, S.en_US
dc.contributor.authorOng, R. A.en_US
dc.contributor.authorOtte, A. N.en_US
dc.contributor.authorPark, N.en_US
dc.contributor.authorPetrashyk, A.en_US
dc.contributor.authorPohl, M.en_US
dc.contributor.authorPueschel, E.en_US
dc.contributor.authorQuinn, J.en_US
dc.contributor.authorRagan, K.en_US
dc.contributor.authorReynolds, P. T.en_US
dc.contributor.authorRichards, G. T.en_US
dc.contributor.authorRoache, E.en_US
dc.contributor.authorRulten, C.en_US
dc.contributor.authorSadeh, I.en_US
dc.contributor.authorSantander, M.en_US
dc.contributor.authorSembroski, G. H.en_US
dc.contributor.authorShahinyan, K.en_US
dc.contributor.authorWakely, S. P.en_US
dc.contributor.authorWeinstein, A.en_US
dc.contributor.authorWells, R. M.en_US
dc.contributor.authorWilcox, P.en_US
dc.contributor.authorWilliams, D. A.en_US
dc.contributor.authorZitzer, B.en_US
dc.contributor.authorJorstad, Svetlana G.en_US
dc.contributor.authorMarscher, Alan P.en_US
dc.contributor.authorLister, M. L.en_US
dc.contributor.authorKovalev, Y. Y.en_US
dc.contributor.authorPushkarev, A. B.en_US
dc.contributor.authorSavolainen, T.en_US
dc.contributor.authorAgudo, I.en_US
dc.contributor.authorMolina, S. N.en_US
dc.contributor.authorGomez, J. L.en_US
dc.contributor.authorLarionov, V. M.en_US
dc.contributor.authorBorman, G. A.en_US
dc.contributor.authorMokrushina, A. A.en_US
dc.contributor.authorTornikoski, M.en_US
dc.contributor.authorLahteenmaki, A.en_US
dc.contributor.authorChamani, W.en_US
dc.contributor.authorEnestam, S.en_US
dc.contributor.authorKiehlmann, S.en_US
dc.contributor.authorHovatta, T.en_US
dc.contributor.authorSmith, P. S.en_US
dc.contributor.authorPontrelli, P.en_US
dc.date.accessioned2017-12-05T14:57:50Z
dc.date.accessioned2019-02-19T18:39:00Z
dc.date.available2017-12-05T14:57:50Z
dc.date.available2019-02-19T18:39:00Z
dc.date.issued2018-04-01
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000428685000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e74115fe3da270499c3d65c9b17d654
dc.identifier.citationAU Abeysekara, W Benbow, R Bird, T Brantseg, R Brose, M Buchovecky, JH Buckley, V Bugaev, MP Connolly, W Cui, MK Daniel, A Falcone, Q Feng, JP Finley, L Fortson, A Furniss, GH Gillanders, I Gunawardhana, M Huetten, D Hanna, O Hervet, J Holder, G Hughes, TB Humensky, CA Johnson, P Kaaret, P Kar, M Kertzman, F Krennrich, MJ Lang, TTY Lin, S McArthur, P Moriarty, R Mukherjee, S O'Brien, RA Ong, AN Otte, N Park, A Petrashyk, M Pohl, E Pueschel, J Quinn, K Ragan, PT Reynolds, GT Richards, E Roache, C Rulten, I Sadeh, M Santander, GH Sembroski, K Shahinyan, SP Wakely, A Weinstein, RM Wells, P Wilcox, DA Williams, B Zitzer, SG Jorstad, AP Marscher, ML Lister, YY Kovalev, AB Pushkarev, T Savolainen, I Agudo, SN Molina, JL Gomez, VM Larionov, GA Borman, AA Mokrushina, M Tornikoski, A Lahteenmaki, W Chamani, S Enestam, S Kiehlmann, T Hovatta, PS Smith, P Pontrelli. 2018. "Multiwavelength Observations of the Blazar BL Lacertae: A New Fast TeV Gamma-Ray Flare." ASTROPHYSICAL JOURNAL, Volume 856, Issue 2, pp. ? - ? (14). https://doi.org/10.3847/1538-4357/aab35c
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttps://hdl.handle.net/2144/33337
dc.description.abstractCombined with measurements made by very-long-baseline interferometry, the observations of fast TeV gamma-ray flares probe the structure and emission mechanism of blazar jets. However, only a handful of such flares have been detected to date, and only within the last few years have these flares been observed from lower-frequency-peaked BL Lac objects and flat-spectrum radio quasars. We report on a fast TeV gamma-ray flare from the blazar BL Lacertae observed by the Very Energetic Radiation Imaging Telescope Array System (VERITAS). with a rise time of ~2.3 hr and a decay time of ~36 min. The peak flux above 200 GeV is (4.2 ± 0.6) × 10⁻⁶ photon m⁻² s⁻¹ measured with a 4-minute-binned light curve, corresponding to ~180% of the flux that is observed from the Crab Nebula above the same energy threshold. Variability contemporaneous with the TeV gamma-ray flare was observed in GeV gamma-ray, X-ray, and optical flux, as well as in optical and radio polarization. Additionally, a possible moving emission feature with superluminal apparent velocity was identified in Very Long Baseline Array observations at 43 GHz, potentially passing the radio core of the jet around the time of the gamma-ray flare. We discuss the constraints on the size, Lorentz factor, and location of the emitting region of the flare, and the interpretations with several theoretical models that invoke relativistic plasma passing stationary shocks.en_US
dc.description.sponsorshipVERITAS is supported by grants from the U.S. Department of Energy Office of Science, the U.S. National Science Foundation and the Smithsonian Institution, and by NSERC in Canada. We acknowledge the excellent work of the technical support staff at the Fred Lawrence Whipple Observatory and at the collaborating institutions in the construction and operation of the instrument.The research at Boston University was supported in part by NASA Fermi Guest Investigator Program grant 80NSSC17K 0694. The VLBA is an instrument of the Long Baseline Observatory (LBO). The LBO is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.This research has made use of data from the MOJAVE database that is maintained by the MOJAVE team (Lister et al. 2009) and supported by NASA Fermi grant NNX15AU76G. This work made use of the Swinburne University of Technology software correlator (Deller et al. 2011), developed as part of the Australian Major National Research Facilities Programme and operated under licence. Y.Y.K. and A.B.P. are partly supported by the Russian Foundation for Basic Research (project 17-02-00197), the government of the Russian Federation (agreement 05.Y09.21.0018), and the Alexander von Humboldt Foundation. T.S. was funded by the Academy of Finland projects 274477 and 284495.This research has made use of data from the OVRO 40 m monitoring program (Richards et al. 2011) which is supported in part by NASA grants NNX08AW31G, NNX11A043G, and NNX14AQ89G and NSF grants AST-0808050 and AST-1109911.The monitoring of BL. Lacertae and other blazars at the Steward Observatory is supported through NASA Fermi Guest Investigator grant NNX15AU81G.I.A. acknowledges support by a Ramon y Cajal grant of the Ministerio de Economia y Competitividad (MINECO) of Spain. Acquisition and reduction of the MAPCAT data was supported in part by MINECO through grants AYA2010-14844, AYA2013-40825-P, and AYA2016-80889-P, and by the Regional Government of Andalucia through grant P09-FQM-4784. The MAPCAT observations were carried out at the German-Spanish Calar Alto Observatory, which is jointly operated by the Max-Planck-Institut fur Astronomie and the Instituto de Astrofisica de Andalucia-CSIC.The St. Petersburg University team acknowledges support from Russian Science Foundation grant 17-12-01029. (U.S. Department of Energy Office of Science; U.S. National Science Foundation; Smithsonian Institution; NSERC in Canada; 80NSSC17K 0694 - NASA Fermi Guest Investigator Program; NNX15AU76G - NASA Fermi grant; 17-02-00197 - Russian Foundation for Basic Research; 05.Y09.21.0018 - government of the Russian Federation; Alexander von Humboldt Foundation; 274477 - Academy of Finland; 284495 - Academy of Finland; NNX08AW31G - NASA; NNX11A043G - NASA; NNX14AQ89G - NASA; AST-0808050 - NSF; AST-1109911 - NSF; NNX15AU81G - NASA Fermi Guest Investigator grant; Ramon y Cajal grant of the Ministerio de Economia y Competitividad (MINECO) of Spain; AYA2010-14844 - MINECO; AYA2013-40825-P - MINECO; AYA2016-80889-P - MINECO; P09-FQM-4784 - Regional Government of Andalucia; 17-12-01029 - Russian Science Foundation)en_US
dc.format.extent14 p.en_US
dc.languageEnglish
dc.language.isoen_US
dc.publisherIOP Publishing LTDen_US
dc.relation.ispartofAstrophysical Journal
dc.rights© 2018. The American Astronomical Society. All rights reserved.en_US
dc.subjectScience & technologyen_US
dc.subjectPhysical sciencesen_US
dc.subjectAstronomy & astrophysicsen_US
dc.subjectBL Lacertae objects: individual (BL Lacertae = VER J2202+422)en_US
dc.subjectGalaxies: activeen_US
dc.subjectActive galactic nucleien_US
dc.subjectBlack-hole massen_US
dc.subjectPolarimetric observationsen_US
dc.subjectRadio polarizationen_US
dc.subjectHigh-frequenciesen_US
dc.subjectLac objectsen_US
dc.subjectJetsen_US
dc.subjectVariabilityen_US
dc.subjectEmissionen_US
dc.subjectEnergyen_US
dc.subjectAstronomical and space sciencesen_US
dc.subjectOrganic chemistryen_US
dc.subjectPhysical chemistry (incl. structural)en_US
dc.titleMultiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flareen_US
dc.typeArticleen_US
dc.description.versionAccepted manuscript and Published versions.en_US
dc.identifier.doi10.3847/1538-4357/aab35c
pubs.elements-sourceweb-of-scienceen_US
pubs.notesEmbargo: Not knownen_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University, College of Arts & Sciencesen_US
pubs.organisational-groupBoston University, College of Arts & Sciences, Department of Astronomyen_US
pubs.publication-statusPublisheden_US
dc.identifier.orcid0000-0001-7396-3332 (Marscher, AP)


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