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 …

We report the results of optical monitoring for a sample of 11 blazars including 10 BL
Lacertae objects (BL Lacs) and one flat spectrum radio quasar (FSRQ). We have measured …

We monitored BL Lacertae for 13 nights in optical B, V, R, and I bands during 2014 October
and November including quasi-simultaneous observations in V and R bands using two …

We report the flux and spectral variability of PG 1553+ 113 on intra-night (IDV) to short-term
time-scales using BVRI data collected over 91 nights from 28 February to 8 November 2019 …

Abstract We have examined 40 Nuclear Spectroscopic Telescope Array (NuSTAR) light
curves (LCs) of five TeV emitting high synchrotron peaked blazars: 1ES 0229+ 200, Mrk 421 …

We present recent optical photometric observations of the blazar OJ 287 taken during 2015
September–2016 May. Our intense observations of the blazar started in 2015 November …

Polarized radiation from blazars is one key piece of evidence for synchrotron radiation at low
energy, which also shows variations. We present here our results on the correlation analysis …

We report on a recent multiband optical photometric and polarimetric observational
campaign of the blazar OJ 287 that was carried out during 2016 September–2017 …

We present the results of extensive multiband intranight optical monitoring of BL Lacertae
during 2010–2012. BL Lacertae was very active in this period and showed intense variability …

Microvariations probe the physics and internal structure of quasars. Unpredictability and
small flux variations make this phenomenon elusive and difficult to detect. Variance-based …