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The Great Markarian 421 Flare of 2010 February: Multiwavelength Variability and Correlation Studies

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dc.contributor.author Abeysekara A.U.
dc.contributor.author Benbow W.
dc.contributor.author Bird R.
dc.contributor.author Brill A.
dc.contributor.author Brose R.
dc.contributor.author Buchovecky M.
dc.contributor.author Buckley J.H.
dc.contributor.author Christiansen J.L.
dc.contributor.author Chromey A.J.
dc.contributor.author Daniel M.K.
dc.contributor.author Dumm J.
dc.contributor.author Falcone A.
dc.contributor.author Feng Q.
dc.contributor.author Finley J.P.
dc.contributor.author Fortson L.
dc.contributor.author Furniss A.
dc.contributor.author Galante N.
dc.contributor.author Gent A.
dc.contributor.author Gillanders G.H.
dc.contributor.author Giuri C.
dc.contributor.author Gueta O.
dc.contributor.author Hassan T.
dc.contributor.author Hervet O.
dc.contributor.author Holder J.
dc.contributor.author Hughes G.
dc.contributor.author Humensky T.B.
dc.contributor.author Johnson C.A.
dc.contributor.author Kaaret P.
dc.contributor.author Kar P.
dc.contributor.author Kelley-Hoskins N.
dc.contributor.author Kertzman M.
dc.contributor.author Kieda D.
dc.contributor.author Krause M.
dc.contributor.author Krennrich F.
dc.contributor.author Kumar S.
dc.contributor.author Lang M.J.
dc.contributor.author Moriarty P.
dc.contributor.author Mukherjee R.
dc.contributor.author Nelson T.
dc.contributor.author Nieto D.
dc.contributor.author Nievas-Rosillo M.
dc.contributor.author O'Brien S.
dc.contributor.author Ong R.A.
dc.contributor.author Otte A.N.
dc.contributor.author Park N.
dc.contributor.author Petrashyk A.
dc.contributor.author Pichel A.
dc.contributor.author Pohl M.
dc.contributor.author Prado R.R.
dc.contributor.author Pueschel E.
dc.contributor.author Quinn J.
dc.contributor.author Ragan K.
dc.contributor.author Reynolds P.T.
dc.contributor.author Richards G.T.
dc.contributor.author Roache E.
dc.contributor.author Rovero A.C.
dc.contributor.author Rulten C.
dc.contributor.author Sadeh I.
dc.contributor.author Santander M.
dc.contributor.author Sembroski G.H.
dc.contributor.author Shahinyan K.
dc.contributor.author Stevenson B.
dc.contributor.author Sushch I.
dc.contributor.author Tyler J.
dc.contributor.author Vassiliev V.V.
dc.contributor.author Wakely S.P.
dc.contributor.author Weinstein A.
dc.contributor.author Wells R.M.
dc.contributor.author Wilcox P.
dc.contributor.author Wilhelm A.
dc.contributor.author Williams D.A.
dc.contributor.author Zitzer B.
dc.contributor.author Acciari V.A.
dc.contributor.author Ansoldi S.
dc.contributor.author Antonelli L.A.
dc.contributor.author Arbet Engels A.
dc.contributor.author Baack D.
dc.contributor.author Babić A.
dc.contributor.author Banerjee B.
dc.contributor.author Barres De Almeida U.
dc.contributor.author Barrio J.A.
dc.contributor.author Becerra González J.
dc.contributor.author Bednarek W.
dc.contributor.author Bellizzi L.
dc.contributor.author Bernardini E.
dc.contributor.author Berti A.
dc.contributor.author Besenrieder J.
dc.contributor.author Bhattacharyya W.
dc.contributor.author Bigongiari C.
dc.contributor.author Biland A.
dc.contributor.author Blanch O.
dc.contributor.author Bonnoli G.
dc.contributor.author Busetto G.
dc.contributor.author Carosi R.
dc.contributor.author Ceribella G.
dc.contributor.author Chai Y.
dc.contributor.author Cikota S.
dc.contributor.author Colak S.M.
dc.contributor.author Colin U.
dc.contributor.author Colombo E.
dc.date.accessioned 2021-02-24T20:31:50Z
dc.date.available 2021-02-24T20:31:50Z
dc.date.issued 2020
dc.identifier.issn 0004-637X
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/160728
dc.description.abstract © 2020. The American Astronomical Society. All rights reserved. We report on variability and correlation studies using multiwavelength observations of the blazar Mrk 421 during the month of 2010 February, when an extraordinary flare reaching a level of ∼27 Crab Units above 1 TeV was measured in very high energy (VHE) γ-rays with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) observatory. This is the highest flux state for Mrk 421 ever observed in VHE γ-rays. Data are analyzed from a coordinated campaign across multiple instruments, including VHE γ-ray (VERITAS, Major Atmospheric Gamma-ray Imaging Cherenkov), high-energy γ-ray (Fermi-LAT), X-ray (Swift, Rossi X-ray Timing Experiment, MAXI), optical (including the GASP-WEBT collaboration and polarization data), and radio (Metsahovi, Owens Valley Radio Observatory, University of Michigan Radio Astronomy Observatory). Light curves are produced spanning multiple days before and after the peak of the VHE flare, including over several flare "decline" epochs. The main flare statistics allow 2 minute time bins to be constructed in both the VHE and optical bands enabling a cross-correlation analysis that shows evidence for an optical lag of ∼25-55 minutes, the first time-lagged correlation between these bands reported on such short timescales. Limits on the Doppler factor (δ ⪆ 33) and the size of the emission region (δ-1RB≲ 3.8 × 1013cm) are obtained from the fast variability observed by VERITAS during the main flare. Analysis of 10 minute binned VHE and X-ray data over the decline epochs shows an extraordinary range of behavior in the flux-flux relationship, from linear to quadratic to lack of correlation to anticorrelation. Taken together, these detailed observations of an unprecedented flare seen in Mrk 421 are difficult to explain with the classic single-zone synchrotron self-Compton model.
dc.relation.ispartofseries Astrophysical Journal
dc.title The Great Markarian 421 Flare of 2010 February: Multiwavelength Variability and Correlation Studies
dc.type Article
dc.relation.ispartofseries-issue 2
dc.relation.ispartofseries-volume 890
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS0004637X-2020-890-2-SID85081537040


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  • Публикации сотрудников КФУ Scopus [22633]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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