148 citations · 1.9k across the 65 of their papers we have counts for
6 papers · 2 filters
Mid-infrared variability of changing-look AGN
Zhenfeng Sheng, Tinggui Wang, Ning Jiang +4
It is known that some active galactic nuclei (AGNs) transited from type 1 to type 2 or vice versa. There are two explanations for the so-called changing look AGNs: one is the drama…
Carbon and Nitrogen Abundance Ratio In the Broad Line Region of Tidal Disruption Events
Chenwei Yang, Tinggui Wang, Gary J. Ferland +4
The rest-frame UV spectra of three recent tidal disruption events (TDEs), ASASSN-14li, PTF15af and iPTF16fnl display strong nitrogen emission lines but weak or undetectable carbon…
Reddening and He I* Absorption Lines in Three Narrow-line Seyfert 1 Galaxies
Shaohua Zhang, Hongyan Zhou, Xiheng Shi +6
We report the detection of heavy reddening and the He I* absorption lines at the AGNs' redshift in three Narrow-line Seyfert 1 galaxies: SDSS J091848.61+211717.0, SD…
Mid-infrared flare of TDE candidate PS16dtm: dust echo and implications for the spectral evolution
Ning Jiang, Tinggui Wang, Lin Yan +6
PS16dtm was classified as a candidate tidal disruption event (TDE) in a dwarf Seyfert 1 galaxy with low-mass black hole () and has presented various intriguing phot…
A Ringed Dwarf LINER 1 Galaxy Hosting an Intermediate-mass Black Hole with Large-scale Rotation-like Hα Emission
Wen-Juan Liu, Lei Qian, Xiao-Bo Dong +7
We report the discovery of a 20-kpc-sized Hα emission in SDSS J083803.68+540642.0, a ringed dwarf galaxy (M = -17.89 mag) hosting an accreting intermediate-mass black hole at z…
Ultraviolet and Optical Emission-line Outflows in the Heavily Obscured Quasar SDSS J000610.67+121501.2: At the Scale of the Dusty Torus and Beyond
Shaohua Zhang, Hongyan Zhou, Xiheng Shi +7
Broad emission-line outflows of active galactic nuclei (AGNs) have been proposed for many years but are very difficult to quantitatively study because of the coexistence of the gra…