activity
20122025
most citedA possible mechanism for multiple changing look phenomenon in Active Galactic Nuclei

135 citations · 596 across the 24 of their papers we have counts for

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Showing 2017Show all

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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…

astro-ph.GA2017★ 7 cited

Periodic optical variability of AGN

E. Bon, P. Marziani, N. Bon

Here we present the evidence for periodicity of an optical emission detected in several AGN. Significant periodicity is found in light curves and radial velocity curves. We discuss…