activity
20152022
most citedSupermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. IV. H Time Lags and Implications for Super-Eddington Accretion

226 citations · 1.4k across the 19 of their papers we have counts for

collaborators
Showing 2017Show all

1 paper · 1 filter

astro-ph.HE2017★ 51 cited

A Possible ~20 yr Periodicity in Long-term Optical Photometric and Spectral Variations of the Nearby Radio-Quiet Active Galactic Nucleus Ark 120

Yan-Rong Li, Jian-Min Wang, Zhi-Xiang Zhang +15

We study the long-term variability in the optical monitoring database of Ark~120, a nearby radio-quiet active galactic nucleus (AGN) at a distance of 143 Mpc (z=0.03271). We compil…