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Rapid Polarized Emission Variability of Blazar S5 0716+714 in Optical Range

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Abstract—

The results of polarimetric observations of blazar S5 0716+714, carried out with the 6-meter BTA telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences, are presented. The polarized emission microvariability of blazar S5 0716+714 was observed in the R band with an initial time resolution of 3–5 seconds. Exposures were integrated at 1-minute intervals with a total observation time of several hours over two nights. Microvariability of the polarization degree with amplitude of 3–4% was detected during 7–11 minutes and flux oscillations within 9–10% during 25 minutes. A partial synchronism of the flux oscillations and the polarization degree of this blazar was found. Possible interpretations of the detected microvariability are briefly described.

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ACKNOWLEDGMENTS

The authors thank M.V. Popov, Doctor of Physical and Mathematical Sciences, for his useful discussions of this work.

The authors also thank the late Professor Yuri Nikolaevich Gnedin (Central (Pulkovo) Observatory, Russian Academy of Sciences) who passed away on March 27, 2018. He was not only one of the main ideologists of the observational program, but also the world’s largest specialist in the radiation polarization from cosmic bodies. In this work, his input regarding the possible mechanisms of the fast polarization variability of S5 0714+716 was valuable. Unfortunately, the processing and interpretation of the material obtained during the framework of this work was delayed, and now the existing rules no longer allow Yu.N. to be formally included as a co-author.

Funding

The hardware and software for the observations were supported within the state task framework of the Special Astrophysical Observatory of Russian Academy of Sciences in the part “Conducting fundamental scientific research,” as well as the Federal Competitiveness Improvement Program of the Kazan (Volga region) Federal University.

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Authors and Affiliations

  1. Astro Space Center, Lebedev Physical Institute, 117997, Moscow, Russia

    V. S. Bychkova & N. S. Kardashev

  2. Central (Pulkovo) Observatory, Russian Academy of Sciences, 196140, St. Petersburg, Russia

    K. L. Maslennikov

  3. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhny Arkhyz, Karachay-Cherkessia, Russia

    V. L. Plokhotnichenko, G. M. Beskin & S. V. Karpov

  4. Kazan (Volga region) Federal University, 420008, Kazan, Russia

    G. M. Beskin & S. V. Karpov

  5. CEICO, Institute of Physics, Czech Academy of Sciences, Praha, Czech Republic

    S. V. Karpov

Authors
  1. V. S. Bychkova
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  2. N. S. Kardashev
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  3. K. L. Maslennikov
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  4. V. L. Plokhotnichenko
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  5. G. M. Beskin
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  6. S. V. Karpov
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Correspondence to V. S. Bychkova.

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Translated by E. Seifina

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Bychkova, V.S., Kardashev, N.S., Maslennikov, K.L. et al. Rapid Polarized Emission Variability of Blazar S5 0716+714 in Optical Range. Astron. Rep. 64, 533–539 (2020). https://doi.org/10.1134/S1063772920060013

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  • DOI: https://doi.org/10.1134/S1063772920060013

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