We systematically search for quasiperiodic oscillatory (QPO) signals on the month timescale
among the 1525 sources given in the Fermi Large Area Telescope Light Curve Repository …

The nearly 33 yr long-term radio light curve obtained with the Metsähovi Radio Observatory
14 m telescope at 37 GHz and the recent 12.7 yr γ-ray light curve of the blazar S5 0716+ 714 …

Spectral variation accompanied by flux variability is a commonly observed phenomenon for
blazars. In order to investigate the optical spectral feature of blazars further, we collected the …

Abstract 3C 66A is one of the most interesting blazars and one of our monitoring objects
carried out with the 1.56 m telescope at Sheshan station, Shanghai Astronomical …

Various quantum gravity approaches that extend beyond the Standard Model predict
Lorentz invariance and charge-parity-time violation at energies approaching the Planck …

In an optical monitoring program to characterize the variability properties of blazars, we
observed 10 sources from the Roma-BZCAT catalog for 26 nights in V and R bands during …

We present the photometric observations of blazars S5 0716+ 714 and 3C 273 with high
temporal resolution (30–60 s) in the I or R bands. The observations were performed with a …

Within a monitored duration of more than 7 yr, we obtained 1358 pairs of gri observations
(514 at the g band, 393 at the r band, and 451 at the i band) for PKS0735+ 178 with a 1.26 m …

We present the results of multiband observations of the blazar S5 0716+ 714 intra-night
variability performed during 23 nights in the period from 04.2014 through 04.2015. The bluer …

We present the results of the observational study of the blazar S5 0716+ 716 in the optical
bands B, V, R, and I between 2019 March and 2023 August to investigate its variability on …