11 citations · 12 across the 2 of their papers we have counts for
4 papers
Broad absorption line disappearance/emergence in multiple ions in a weak emission-line quasar
Weimin Yi, M. Vivek, W. N. Brandt +9
We report the discovery of disappearance of Mg ii, Al iii, C iv, and Si iv broad absorption lines (BALs) at the same velocity, accompanied by a new Civ BAL emerging at a higher vel…
A long decay of X-ray flux and spectral evolution in the supersoft active galactic nucleus GSN 069
X. W. Shu, S. S. Wang, L. M. Dou +3
GSN 069 is an optically identified very low-mass AGN which shows supersoft X-ray emission. The source is known to exhibit huge X-ray outburst, with flux increased by more than a fa…
On the fraction of X-ray obscured quasars
Junxian Wang, Peng Jiang, Zhenya Zheng +2
Various studies have claimed that the fraction of obscured AGN drops with luminosity, but contrary results are also reported. We present our recent studies on the fraction of X-ray…
On the fraction of X-ray obscured quasars in the local universe
J. X. Wang, P. Jiang
Recent wide area hard X-ray and soft Gamma ray surveys have shown that the fraction of X-ray obscured AGNs in the local universe significantly decreases with intrinsic luminosity.…