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

Ryo Imazawa,Mahito Sasada, Natsuko Hazama,Yasushi Fukazawa,Tatsuya Nakaoka,Hiroshi Akitaya,Koji S. Kawabata, Thomas Bohn,Anjasha Gangopadhyay

Proceedings of the International Astronomical Union（2022）

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摘要

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.

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关键词

bl lacertae,polarization vector,wavelength dependence

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