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Galaxies 2017, 5(4), 83; doi:10.3390/galaxies5040083

Polarization and Spectral Energy Distribution in OJ 287 during the 2016/17 Outbursts

1
Finnish Centre for Astronomy with ESO, University of Turku, 21500 Kaarina, Finland
2
Tuorla Observatory, Department of Physics and Astronomy, University of Turku, 21500 Kaarina, Finland
3
Astronomical Observatory, Jagiellonian Unviersity, ul. Orla 171, 30-244 Krakow, Poland
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Mt. Suhora Observatory, Pedagogical University, ul. Podchorazych 2, 30-084 Krakow, Poland
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Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, Brownlow Hill L3 5RF, UK
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Space Science Data Center—Agenzia Spaziale Italiana, via del Politecnico, snc, I-00133 Roma, Italy
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Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia, Italy
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Faculty of Electrical Engineering, Czech Technical University in Prague, Technicka 2, CZ-166 27 Praha 6, Czech Republic
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Engelhardt Astronomical observatory, Kazan Federal University, Kremlyovskaya street 18, Kazan 420008, Russia
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Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai 400005, India
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Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Dark Sky Observatory, Department of Physics and Astronomy, Appalachian State University, Boone, NC 28608, USA
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Section of Astrophysics, Astronomy and Mechanics, Department of Physics, National & Kapodistrian University of Athens, Zografos, Athens GR-15784, Greece
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Astronomical Institute, Osaka Kyoiku University, 4-698 Asahigaoka, Kashiwara, Osaka 582-8582, Japan
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Department of Physics, Faculty of Arts and Sciences, Canakkale Onsekiz Mart University, Canakkale TR-17100, Turkey
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Astrophysics Research Center and Ulupinar Observatory, Canakkale Onsekiz Mart University, Canakkale TR-17100, Turkey
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Observatory of Taras Shevshenko National University of Kyiv, Observatorna str. 3, 04053 Kyiv, Ukraine
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Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Metaxa & Vas. Pavlou St., Penteli, Athens GR-15236, Greece
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ICAMER Observatory of NASU, 27, Acad. Zabolotnoho str., 03143 Kyiv, Ukraine
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Astronomical Observatory of National Ivan Franko University of Lviv, 8, Kyryla i Methodia str., 79005 Lviv, Ukraine
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Department of Physics, Faculty of Science, Atatürk University, Erzurum 25240, Turkey
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Department of Physics, University of the West Indies, St Augustine, Trinidad
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Yerkes Observatory, Department of Astronomy and Astrophysics, University of Chicago, 373 W. Geneva St., Williams Bay, WI 53191, USA
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Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
25
Herschel Science Centre, ESAC, European Space Agency, 28692 Villanueva de la Cañada, 28692 Madrid, Spain
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Caribbean Institute of Astronomy, c/o Department of Physics, University of the West Indies, St. Augustine, Trinidad
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Nordic Optical Telescope, Apartado 474, Santa Cruz de La Palma E-38700, Spain
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Astronomy and Space Physics Department, Taras Shevshenko National University of Kyiv, Volodymyrska str. 60, 01033 Kyiv, Ukraine
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Department of Physics, University of Adiyaman, Adiyaman 02040, Turkey
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Janusz Gil Institute of Astronomy, University of Zielona Góra, Szafrana 2, PL-65-516 Zielona Góra, Poland
*
Author to whom correspondence should be addressed.
Received: 29 August 2017 / Revised: 8 November 2017 / Accepted: 9 November 2017 / Published: 20 November 2017
(This article belongs to the Special Issue Polarised Emission from Astrophysical Jets)
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Abstract

We report optical photometric and polarimetric observations of the blazar OJ 287 gathered during 2016/17. The high level of activity, noticed after the General Relativity Centenary flare, is argued to be part of the follow-up flares that exhibited high levels of polarization and originated in the primary black hole jet. We propose that the follow-up flares were induced as a result of accretion disk perturbations, travelling from the site of impact towards the primary SMBH. The timings inferred from our observations allowed us to estimate the propagation speed of these perturbations. Additionally, we make predictions for the future brightness of OJ 287. View Full-Text
Keywords: galaxies: active; BL lacertae objects: individual (OJ 287); super massive black holes galaxies: active; BL lacertae objects: individual (OJ 287); super massive black holes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Valtonen, M.; Zola, S.; Jermak, H.; Ciprini, S.; Hudec, R.; Dey, L.; Gopakumar, A.; Reichart, D.L.; Caton, D.B.; Gazeas, K.; Matsumoto, K.; Ogloza, W.; Drozdz, M.; Alicavus, F.; Baransky, O.; Berdyugin, A.; Boumis, P.; Bufan, Y.; Debski, B.; Er, H.; Erdem, A.; Godunova, V.; Haque, S.; Hoette, V.L.; Janik, J.; Kidger, M.; Kundera, T.; Kurowski, S.; Liakos, A.; Mohammed, I.; Nilsson, K.; Pajdosz, U.; Piirola, V.; Pursimo, T.; Rajkumar, B.; Simon, A.O.; Siwak, M.; Sonbas, E.; Steele, I.A.; Vasylenko, V.V.; Zejmo, M.; Zielinski, P. Polarization and Spectral Energy Distribution in OJ 287 during the 2016/17 Outbursts. Galaxies 2017, 5, 83.

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