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Tidally disrupted dusty clumps as the origin of broad emission lines in active galactic nuclei
Jian-Min Wang, Pu Du, Michael S. Brotherton +5
Type 1 active galactic nuclei display broad emission lines, regarded as arising from photoionized gas moving in the gravitational potential of a supermassive black hole. The origin…
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…
Hidden Broad-line Regions in Seyfert 2 Galaxies: from the spectropolarimetric perspective
Pu Du, Jian-Min Wang, Zhi-Xiang Zhang
The hidden broad-line regions (BLRs) in Seyfert 2 galaxies, which display broad emission lines (BELs) in their polarized spectra, are a key piece of evidence in support of the unif…