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dc.contributor.authorLarionov, V. M.en_US
dc.contributor.authorVillata, M.en_US
dc.contributor.authorRaiteri, C. M.en_US
dc.contributor.authorJorstad, S. G.en_US
dc.contributor.authorMarscher, A. P.en_US
dc.contributor.authorAgudo, Ivanen_US
dc.contributor.authorSmith, P. S.en_US
dc.contributor.authorAcosta-Pulido, J. A.en_US
dc.contributor.authorArevalo, M. J.en_US
dc.contributor.authorArkharov, A. A.en_US
dc.contributor.authorBachev, R.en_US
dc.contributor.authorBlinov, D. A.en_US
dc.contributor.authorBorisov, G.en_US
dc.contributor.authorBorman, G. A.en_US
dc.contributor.authorBozhilov, V.en_US
dc.contributor.authorBueno, A.en_US
dc.contributor.authorCarnerero, M. I.en_US
dc.contributor.authorCarosati, D.en_US
dc.contributor.authorCasadio, C.en_US
dc.contributor.authorChen, W. P.en_US
dc.contributor.authorClemens, D. P.en_US
dc.contributor.authorDi Paola, A.en_US
dc.contributor.authorEhgamberdiev, Sh. A.en_US
dc.contributor.authorGomez, J. L.en_US
dc.contributor.authorGonzalez-Morales, P. A.en_US
dc.contributor.authorGrinon-Marin, A.en_US
dc.contributor.authorGrishina, T. S.en_US
dc.contributor.authorHagen-Thorn, V. A.en_US
dc.contributor.authorIbryamov, S.en_US
dc.contributor.authorItoh, R.en_US
dc.contributor.authorJoshi, M.en_US
dc.contributor.authorKopatskaya, E. N.en_US
dc.contributor.authorKoptelova, E.en_US
dc.contributor.authorLazaro, C.en_US
dc.contributor.authorLarionova, E. G.en_US
dc.contributor.authorLarionova, L. V.en_US
dc.contributor.authorManilla-Robles, A.en_US
dc.contributor.authorMetodieva, Y.en_US
dc.contributor.authorMilanova, Yu V.en_US
dc.contributor.authorMirzaqulov, D. O.en_US
dc.contributor.authorMolina, S. N.en_US
dc.contributor.authorMorozova, D. A.en_US
dc.contributor.authorNazarov, S. V.en_US
dc.contributor.authorOvcharov, E.en_US
dc.contributor.authorPeneva, S.en_US
dc.contributor.authorRos, J. A.en_US
dc.contributor.authorSadun, A. C.en_US
dc.contributor.authorSavchenko, S. S.en_US
dc.contributor.authorSemkov, E.en_US
dc.contributor.authorSergeev, S. G.en_US
dc.contributor.authorStrigachev, A.en_US
dc.contributor.authorTroitskaya, Yu V.en_US
dc.contributor.authorTroitsky, I. S.en_US
dc.date.accessioned2018-02-20T16:55:22Z
dc.date.available2018-02-20T16:55:22Z
dc.date.issued2016-09-21
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000383481100056&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e74115fe3da270499c3d65c9b17d654
dc.identifier.citationVM Larionov, M Villata, CM Raiteri, SG Jorstad, AP Marscher, I Agudo, PS Smith, JA Acosta-Pulido, MJ Arevalo, AA Arkharov, R Bachev, DA Blinov, G Borisov, GA Borman, V Bozhilov, A Bueno, MI Carnerero, D Carosati, C Casadio, WP Chen, DP Clemens, A Di Paola, Sh A Ehgamberdiev, JL Gomez, PA Gonzalez-Morales, A Grinon-Marin, TS Grishina, VA Hagen-Thorn, S Ibryamov, R Itoh, M Joshi, EN Kopatskaya, E Koptelova, C Lazaro, EG Larionova, LV Larionova, A Manilla-Robles, Y Metodieva, Yu V Milanova, DO Mirzaqulov, SN Molina, DA Morozova, SV Nazarov, E Ovcharov, S Peneva, JA Ros, AC Sadun, SS Savchenko, E Semkov, SG Sergeev, A Strigachev, Yu V Troitskaya, IS Troitsky. 2016. "Exceptional outburst of the blazar CTA 102 in 2012: the GASP-WEBT campaign and its extension." Monthly Notices of the Royal Astronomical Society, Volume 461, Issue 3, pp. 3047 - 3056 (10).
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.urihttps://hdl.handle.net/2144/27093
dc.description.abstractAfter several years of quiescence, the blazar CTA 102 underwent an exceptional outburst in 2012 September–October. The flare was tracked from γ-ray to near-infrared (NIR) frequencies, including Fermi and Swift data as well as photometric and polarimetric data from several observatories. An intensive Glast-Agile support programme of the Whole Earth Blazar Telescope (GASP–WEBT) collaboration campaign in optical and NIR bands, with an addition of previously unpublished archival data and extension through fall 2015, allows comparison of this outburst with the previous activity period of this blazar in 2004–2005. We find remarkable similarity between the optical and γ-ray behaviour of CTA 102 during the outburst, with a time lag between the two light curves of ≈1 h, indicative of cospatiality of the optical and γ-ray emission regions. The relation between the γ-ray and optical fluxes is consistent with the synchrotron self-Compton (SSC) mechanism, with a quadratic dependence of the SSC γ-ray flux on the synchrotron optical flux evident in the post-outburst stage. However, the γ-ray/optical relationship is linear during the outburst; we attribute this to changes in the Doppler factor. A strong harder-when-brighter spectral dependence is seen both the in γ-ray and optical non-thermal emission. This hardening can be explained by convexity of the UV–NIR spectrum that moves to higher frequencies owing to an increased Doppler shift as the viewing angle decreases during the outburst stage. The overall pattern of Stokes parameter variations agrees with a model of a radiating blob or shock wave that moves along a helical path down the jet.en_US
dc.description.sponsorshipThe radio-to-optical data collected by the GASP-WEBT collaboration are stored in the GASP-WEBT archive; for questions regarding their availability, please contact the WEBT president, Massimo Villata (villata@oato.inaf.it). The St. Petersburg University team acknowledges support from Russian RFBR grant 15-02-00949, and St. Petersburg University research grants 6.38.335.2015 and 6.42.1113.2016. The research at Boston University was funded in part by NASA Fermi Guest Investigator grants NNX08AV65G, NNX10AO59G, NNX10AU15G, NNX11AO37G, NNX11AQ03G, and NNX14AQ58G. The research at Steward Observatory was funded in part by NASA Fermi Guest Investigator grants NNX09AU10G and NNX12AO93G. Acquisition of the MAPCAT data at Calar Alto is performed at the IAA-CSIC and is supported by the Spanish Ministry of Economy and Competitiveness (MINECO) grant AYA2013-40825-P. IA acknowledges support by a Ramon y Cajal grant of the MINECO. AZT-24 observations are made within an agreement between Pulkovo, Rome and Teramo observatories. The PRISM camera at Lowell Observatory was developed by K. Janes et al. at BU and Lowell Observatory, with funding from the NSF, BU, and Lowell Observatory. This research was conducted in part using the Mimir instrument, jointly developed at Boston University and Lowell Observatory and supported by NASA, NSF, and the W. M. Keck Foundation. Calar Alto Observatory is jointly operated by the Max-Planck-Institut fur Astronomie and the Instituto de Astrofisica de Andalucia-CSIC. This research was partially supported by the Scientific Research Fund of the Bulgarian Ministry of Education and Sciences under grant DO 02-137 (BIn-13/09). The Maidanak Observatory team acknowledges support from Uzbekistan Academy of Sciences grant F2-FA-F027. Skinakas Observatory is a collaborative project of the University of Crete, the Foundation for Research and Technology - Hellas, and the Max-Planck-Institut fur Extraterrestrische Physik. This paper is partly based on observations made with the IAC80 and TCS telescopes operated by the Instituto de Astrofisica de Canarias in the Spanish Observatorio del Teide on the island of Tenerife. (15-02-00949 - Russian RFBR; 6.38.335.2015 - St. Petersburg University; 6.42.1113.2016 - St. Petersburg University; NNX08AV65G - NASA; NNX10AO59G - NASA; NNX10AU15G - NASA; NNX11AO37G - NASA; NNX11AQ03G - NASA; NNX14AQ58G - NASA; NNX09AU10G - NASA; NNX12AO93G - NASA; AYA2013-40825-P - Spanish Ministry of Economy and Competitiveness (MINECO); MINECO; NSF; BU; Lowell Observatory; DO 02-137 (BIn-13/09) - Bulgarian Ministry of Education and Sciences; F2-FA-F027 - Uzbekistan Academy of Sciences)en_US
dc.format.extent3047 - 3056 (10)en_US
dc.languageEnglish
dc.publisherOXFORD UNIV PRESSen_US
dc.relation.ispartofMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.subjectScience & technologyen_US
dc.subjectPhysical sciencesen_US
dc.subjectAstronomy & astrophysicsen_US
dc.subjectMethods: observationalen_US
dc.subjectTechniques: photometricen_US
dc.subjectTechniques: polarimetricen_US
dc.subjectGalaxies: activeen_US
dc.subjectQuasars: individual: CTA 102en_US
dc.subjectLarge area telescopeen_US
dc.subjectStellar radio sourcesen_US
dc.subjectGamma ray flareen_US
dc.subject3C 454.3en_US
dc.subjectBL Lacertaeen_US
dc.subjectPolarizationen_US
dc.subjectAstronomical and space sciencesen_US
dc.titleExceptional outburst of the blazar CTA 102 in 2012: the GASP-WEBT campaign and its extensionen_US
dc.typeArticleen_US
dc.identifier.doi10.1093/mnras/stw1516
pubs.elements-sourceweb-of-scienceen_US
pubs.notesEmbargo: 12 monthsen_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)
dc.identifier.orcid0000-0002-9947-4956 (Clemens, DP)


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