Radio and optical intra-day variability observations of five blazars

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dc.authoridBalonek, Thomas/0000-0002-9844-1730
dc.authoridGazeas, Kosmas/0000-0002-8855-3923
dc.authoridLiu, Xiang/0000-0001-9815-2579
dc.authoridKrichbaum, T. P./0000-0002-4892-9586
dc.authoridKurtanidze, Omar/0000-0001-5385-0576
dc.authoridLiu, Jun/0000-0002-7615-7499
dc.authoridMatsumoto, Katsura/0000-0002-5277-568X
dc.contributor.authorLiu, X.
dc.contributor.authorYang, P. P.
dc.contributor.authorLiu, J.
dc.contributor.authorLiu, B. R.
dc.contributor.authorHu, S. M.
dc.contributor.authorKurtanidze, O. M.
dc.contributor.authorZola, S.
dc.date.accessioned2025-01-27T20:16:41Z
dc.date.available2025-01-27T20:16:41Z
dc.date.issued2017
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe carried out a pilot campaign of radio and optical band intra-day variability (IDV) observations of five blazars (3C66A, S5 0716+714, OJ287, B0925+504 and BL Lacertae) on 2015 December 18-21 by using the radio telescope in Effelsberg (Germany) and several optical telescopes in Asia, Europe and America. After calibration, the light curves from both 5 GHz radio band and the optical R band were obtained, although the data were not smoothly sampled over the sampling period of about four days. We tentatively analyse the amplitudes and time-scales of the variabilities, and any possible periodicity. The blazars vary significantly in the radio (except 3C66A and BL Lacertae with only marginal variations) and optical bands on intra-and inter-day time-scales, and the source B0925+504 exhibits a strong quasi-periodic radio variability. No significant correlation between the radio-and optical-band variability appears in the five sources, which we attribute to the radio IDV being dominated by interstellar scintillation whereas the optical variability comes from the source itself. However, the radio and optical-band variations appear to be weakly correlated in some sources and should be investigated based on well-sampled data from future observations.
dc.description.sponsorship973 Program [2015CB857100]; Key Laboratory of Radio Astronomy, the Chinese Academy of Sciences; National Natural Science Foundation of China [11273050, 11463001, 11503071, 11203016]; Guangxi Science Foundation [2014GXNSFAA118024]; Shota Rustaveli NSF [FR/217554/16]; Young Scholars Program of Shandong University, Weihai; National Science Centre Poland (NCN) Grant [2013/09/B/ST9/00599]; Scientific and Technological Research Council of Turkey (TUBITAK) [10CT60-76]; Division Of Astronomical Sciences; Direct For Mathematical & Physical Scien [1517030] Funding Source: National Science Foundation
dc.description.sponsorshipWe gratefully acknowledge the referee for careful reading and valuable comments. This work is supported from the following funds: the 973 Program 2015CB857100; the Key Laboratory of Radio Astronomy, the Chinese Academy of Sciences; the National Natural Science Foundation of China (Grants No. 11273050, No. 11463001 and No. 11503071); and the Guangxi Science Foundation (2014GXNSFAA118024). OMK acknowledges financial support from the Shota Rustaveli NSF under contract FR/217554/16; and SMH acknowledges support from the National Natural Science Foundation of China under Grant No. 11203016 and support from the Young Scholars Program of Shandong University, Weihai. SZ acknowledges partial support from National Science Centre Poland (NCN) Grant No. 2013/09/B/ST9/00599. Optical monitoring observations of OJ287 and BL Lac collected within the framework of the Blazar Optical Sky Survey (BOSS Project), is conducted at the University of Athens, Greece. We thank The Scientific and Technological Research Council of Turkey (TUBITAK) for partial support for using the T60 telescope through Project No. 10CT60-76. The radio data are based on observations with the 100-m telescope at the MPIfR (Max-Planck-Institut fur Radioastronomie) at Effelsberg.
dc.identifier.doi10.1093/mnras/stx1062
dc.identifier.endpage2463
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85041116342
dc.identifier.scopusqualityQ1
dc.identifier.startpage2457
dc.identifier.urihttps://doi.org/10.1093/mnras/stx1062
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21347
dc.identifier.volume469
dc.identifier.wosWOS:000406629100092
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherOxford Univ Press
dc.relation.ispartofMonthly Notices of The Royal Astronomical Society
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectscattering
dc.subjectBL Lacertae objects: general
dc.subjectgalaxies: jets
dc.subjectquasars: general
dc.titleRadio and optical intra-day variability observations of five blazars
dc.typeArticle

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