Intra-night optical flux and polarization variability of BL Lacertae during its 2020–2021 high state

• Published in: Monthly notices of the Royal Astronomical Society Vol. 522; no. 2; pp. 3018 - 3035
• Main Authors: Bachev, Rumen, Tripathi, Tushar, Gupta, Alok C, Kushwaha, Pankaj, Strigachev, Anton, Kurtenkov, Alexander, Nikolov, Yanko, Boeva, Svetlana, Damljanovic, Goran, Vince, Oliver, Stojanovic, Milan, Kishore, Shubham, Gaur, Haritma, Dhiman, Vinit, Fan, Junhui, Kalita, Nibedita, Spassov, Borislav, Semkov, Evgeni
• Format: Journal Article
• Language: English
• Published: Oxford University Press 21.04.2023
• Subjects: BL Lacertae objects: individual: BL Lacertae; BL Lacertae objects: general

ABSTRACT In this work, we report the presence of rapid intra-night optical variations in both flux and polarization of the blazar BL Lacertae during its unprecedented 2020–2021 high state of brightness. The object showed significant flux variability and some colour changes, but no firmly detectable...