Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Feng, Q.
dc.contributor.author Jorstad, S. G.
dc.contributor.author Marscher, A. P.
dc.contributor.author Lister, M. L.
dc.contributor.author Kovalev, Y. Y.
dc.contributor.author Pushkarev, A. B.
dc.contributor.author Savolainen, T.
dc.contributor.author Agudo, I.
dc.contributor.author Molina, S. N.
dc.contributor.author Gomez, J. L.
dc.contributor.author Larionov, V. M.
dc.contributor.author Borman, G. A.
dc.contributor.author Mokrushina, A. A.
dc.contributor.author Smith, P. S.
dc.date.accessioned 2018-02-09T09:58:18Z
dc.date.available 2018-02-09T09:58:18Z
dc.date.issued 2017
dc.identifier.citation Feng , Q , Jorstad , S G , Marscher , A P , Lister , M L , Kovalev , Y Y , Pushkarev , A B , Savolainen , T , Agudo , I , Molina , S N , Gomez , J L , Larionov , V M , Borman , G A , Mokrushina , A A & Smith , P S 2017 , Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare . in 35th International Cosmic Ray Conference, ICRC2017. The astroparticle physics conference. 12-20 July 2017, Bexco, Busan, Korea . Pos proceedings of science , Sissa , Proceedings of the 35th International Cosmic Ray Conference (ICRC 2017) , International Cosmic Ray Conference , Busan , Korea, Republic of , 10/07/2017 . en
dc.identifier.issn 1824-8039
dc.identifier.other PURE UUID: 5b5e6c79-d280-4afd-98c1-b772f1357100
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/multiwavelength-observations-of-the-blazar-bl-lacertae-a-new-fast-tev-gammaray-flare(5b5e6c79-d280-4afd-98c1-b772f1357100).html
dc.identifier.other PURE LINK: https://pos.sissa.it/301/648/pdf
dc.identifier.other PURE LINK: http://adsabs.harvard.edu/abs/2017arXiv170806386F
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/16848156/savolainen_et_al_ICRC2017_648.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/29838
dc.description.abstract Observations of fast TeV $\gamma$-ray flares from blazars reveal the extreme compactness of emitting regions in blazar jets. Combined with very-long-baseline radio interferometry measurements, they probe the structure and emission mechanism of the jet. We report on a fast TeV $\gamma$-ray flare from BL Lacertae observed by VERITAS, with a rise time of about 2.3 hours and a decay time of about 36 minutes. The peak flux at $>$200 GeV measured with the 4-minute binned light curve is $(4.2 \pm 0.6) \times 10^{-6} \;\text{photons} \;\text{m}^{-2}\, \text{s}^{-1}$, or $\sim$180% the Crab Nebula flux. Variability in GeV $\gamma$-ray, X-ray, and optical flux, as well as in optical and radio polarization was observed around the time of the TeV $\gamma$-ray flare. A possible superluminal knot was identified in the VLBA observations at 43 GHz. The flare constrains the size of the emitting region, and is consistent with several theoretical models with stationary shocks. en
dc.format.extent 8
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartof International Cosmic Ray Conference en
dc.relation.ispartofseries 35th International Cosmic Ray Conference, ICRC2017. The astroparticle physics conference. 12-20 July 2017, Bexco, Busan, Korea en
dc.relation.ispartofseries Pos proceedings of science en
dc.rights openAccess en
dc.subject.other 115 Astronomy and space science en
dc.title Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare en
dc.type A4 Artikkeli konferenssijulkaisussa fi
dc.description.version Non peer reviewed en
dc.contributor.department McGill University
dc.contributor.department Boston University
dc.contributor.department Purdue University
dc.contributor.department Lebedev Physical Institute
dc.contributor.department Crimean Astrophysical Observatory
dc.contributor.department Department of Electronics and Nanoengineering
dc.contributor.department Instituto de Astrofisica de Andalucia (Spain)
dc.contributor.department ITMO University
dc.contributor.department University of Arizona
dc.subject.keyword Astrophysics - High Energy Astrophysical Phenomena
dc.subject.keyword 115 Astronomy and space science
dc.identifier.urn URN:NBN:fi:aalto-201802091334
dc.type.version publishedVersion


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