226 citations · 2.2k across the 50 of their papers we have counts for
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Fraction of the X-ray selected AGNs with optical emission lines in galaxy groups
Feng Li, Qirong Yuan, Weihao Bian +2
Compared with numerous X-ray dominant active galactic nuclei (AGNs) without emission-line signatures in their optical spectra, the X-ray selected AGNs with optical emission lines a…
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…
Variation of ionizing continuum: the main driver of Broad Absorption Line Variability
Zhicheng He, Tinggui Wang, Hongyan Zhou +5
We present a statistical analysis of the variability of broad absorption lines (BALs) in quasars using the large multi-epoch spectroscopic dataset of the Sloan Digital Sky Survey D…
Unveiling slim accretion disc in AGN through X-ray and Infrared observations
Núria Castelló-Mor, Shai Kaspi, Hagai Netzer +7
In this work, which is a continuation of Castelló-Mor et al. (2016), we present new X-ray and infrared (IR) data for a sample of active galactic nuclei (AGN) covering a wide range…
Swift observations of SMC X-3 during its 2016-2017 super-Eddington outburst
Shan-Shan Weng, Ming-Yu Ge, Hai-Hui Zhao +4
The Be X-ray pulsar, SMC X-3 underwent a giant outburst from 2016 August to 2017 March, which was monitored with the Swift satellite. During the outburst, its broadband flux increa…