4 papers · 1 filter
SMBH binary candidate PKS J2134-0153: Possible multi-band periodic variability and inter-band time lags
Guowei Ren, Mouyuan Sun, Nan Ding +2
Studying the periodic flux-variation behavior of blazars is vital for probing supermassive black hole binaries and the kinematics of relativistic jets. In this work, we report the…
How Long Will the Quasar UV/Optical Flickering Be Damped? II. the Observational Test
Guowei Ren, Shuying Zhou, Mouyuan Sun +1
The characteristic timescale at which the variability of active galactic nuclei (AGNs) turns from red noise to white noise can probe the accretion physics around supermassive black…
Sizes of active galactic nuclei inhomogeneous disks -- large in microlensing, small in reverberation mapping
Guowei Ren, Mouyuan Sun, Jun-Xian Wang +1
Magnetohydrodynamics (MHD) turbulence can drive significant temperature fluctuations in the accretion disk of an active galactic nucleus (AGN). As a result, the disk can be highly…
How long will the quasar UV/optical flickering be damped?
Shuying Zhou, Mouyuan Sun, Zhen-Yi Cai +3
The UV/optical light curves of Active Galactic Nuclei (AGNs) are commonly described by the Damped Random Walk (DRW) model. However, the physical interpretation of the damping times…