1 citations · 1 across the 5 of their papers we have counts for
5 papers
Quasi-periodic oscillations in optical color evolutions to support sub-pc binary black hole systems in broad line active galactic nuclei
Zhang XueGuang
Optical quasi-periodic oscillations (QPOs) with periodicity around hundreds to thousands of days have been accepted as an efficient indicator for sub-pc binary black hole systems (…
Effects of intrinsic AGN variability on optical QPOs related to sub-pc binary black hole systems in broad line AGN
Zhang XueGuang
In this manuscript, an oversimplified model is proposed to test the effects of intrinsic AGN variability on expected optical quasi-periodic oscillations (QPOs) related to sub-pc bi…
Optical QPOs with 550 day periodicity in the reverberation mapped broad line quasar PG 1411+442
XueGuang Zhang
In this manuscript, optical quasi-periodic oscillations (QPOs) with 550 day periodicity related to a candidate of sub-pc binary black hole (BBH) system are reported in the reverber…
A sub-pc BBH system in SDSS J1609+1756 through optical QPOs in ZTF light curves
XueGuang Zhang
Optical quasi-periodic oscillations (QPOs) are the most preferred signs of sub-pc binary black hole (BBH) systems in AGN. In this manuscript, robust optical QPOs are reported in qu…
New approach to broad line region radius in Mrk142 after considering potential short-term optical transient quasi-periodic oscillations
Zhang XueGuang
Mrk142 has been known as the only outlier in R-L space (correlation between BLRs (broad line regions) radii and continuum luminosity) among the low redshift local reverberation map…