33 citations · 71 across the 22 of their papers we have counts for
4 papers · 1 filter
Discovery of Repeating Transitions in 16 Changing-look Active Galactic Nuclei
Qian Dong, Zhi-Xiang Zhang, Wei-Min Gu +5
The repeating changing-look active galactic nuclei (RCL AGNs) exhibit multiple appearances and disappearances of broad emission lines (BELs), whose underlying mechanism remains a p…
A Sandwich Model for Changing-Look AGNs
Qian-Qi Ma, Wei-Min Gu, Zhen-Yi Cai +4
The spectral variability of changing-look active galactic nuclei (CL-AGNs) occurred on timescales of years to tens of years, posing a significant challenge to the standard thin dis…
Newly Discovered Changing-look Active Galactic Nuclei from SDSS and LAMOST Surveys
Qian Dong, Zhi-Xiang Zhang, Wei-Min Gu +2
Changing-look Active Galactic Nuclei (CL AGNs) exhibit drastic variations in broad emission lines (BELs), the mechanism of which remains unclear. Expanding the sample of CL AGNs is…
A new timescale-mass scaling for the optical variation of active galactic nuclei across the intermediate-mass to supermassive scales
Zhen-Bo Su, Zhen-Yi Cai, Mouyuan Sun +3
Variability of active galactic nuclei (AGNs) has long been servicing as an essential avenue of exploring the accretion physics of black hole (BH). There are two commonly used metho…