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The Microvariability and Wavelength Dependence of Polarization Vector of BL Lacertae in the Outburst 2020 to 2021

Published online by Cambridge University Press:  11 September 2023

Ryo Imazawa Open the ORCID record for Ryo Imazawa [Opens in a new window] ,
Mahito Sasada ,
Natsuko Hazama Open the ORCID record for Natsuko Hazama [Opens in a new window] ,
Yasushi Fukazawa ,
Tatsuya Nakaoka ,
Hiroshi Akitaya Open the ORCID record for Hiroshi Akitaya [Opens in a new window] ,
Koji S. Kawabata Open the ORCID record for Koji S. Kawabata [Opens in a new window] ,
Thomas Bohn  and
Anjasha Gangopadhyay
Ryo Imazawa
Affiliation:
Department of Physics, Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama, 1-3-1 Higashi-Hiroshima, Hiroshima 739-8526, Japan email: imazawa@astro.hiroshima-u.ac.jp
Mahito Sasada
Affiliation:
Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
Natsuko Hazama
Affiliation:
Department of Physics, Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama, 1-3-1 Higashi-Hiroshima, Hiroshima 739-8526, Japan email: imazawa@astro.hiroshima-u.ac.jp
Yasushi Fukazawa
Affiliation:
Department of Physics, Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama, 1-3-1 Higashi-Hiroshima, Hiroshima 739-8526, Japan email: imazawa@astro.hiroshima-u.ac.jp Department of Physical Science, Hiroshima University 1-3-1 Kagamiyama, Higashi-Hiroshima Hiroshima 739-8526, Japan
Tatsuya Nakaoka
Affiliation:
Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
Hiroshi Akitaya
Affiliation:
Planetary Exploration Research Center, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan
Koji S. Kawabata
Affiliation:
Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
Thomas Bohn
Affiliation:
Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
Anjasha Gangopadhyay
Affiliation:
Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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Abstract

We performed photo-polarimetry observations for the blazar BL Lacertae (BL Lac) in 2020 to 2021, in which BL Lac showed historical outburst. As a result, we obtained microvariability with a timescale about five minutes and wavelength dependence of polarization degree and angle. These results indicate multiple emission regions and turbulent magnetic field structure.

Keywords

BL Lacertaepolarimetry
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S375: The Multimessenger Chakra of Blazar Jets , December 2021 , pp. 61 - 65
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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