347 citations · 3.9k across the 113 of their papers we have counts for
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Black hole mass and velocity dispersion of narrow line region in active galactic nuclei and narrow line Seyfert 1 galaxies
T. G. Wang, Y. J. Lu
Controversy regarding whether Narrow Line Seyfert 1 galaxies (NLS1s) follow the same black hole --- galactic bulge relation as normal galaxies has been raised by Mathur et al. (200…
The relationship between the X-ray variability and the central black hole mass
Youjun Lu, Qingjuan Yu
We assembled a sample of Seyfert 1 galaxies, QSOs and Low-Luminosity Active Galactic Nuclei (LLAGNs) observed by ASCA, whose central black hole masses have been measured. We found…
The effects of relativistic bulk motion of X-ray flares in the corona on the iron Kalpha line in Seyfert 1 galaxies
Youjun Lu, Qingjuan Yu
We study the effects of the bulk motion of X-ray flares on the shape and equivalent width of the iron Kalpha line from an untruncated cold disk around a Kerr black hole using fully…
Fe K_alpha line: A tool to probe massive binary black holes in Active Galactic Nuclei?
Qingjuan Yu, Youjun Lu
Hierarchical mergers of galaxies can form binary black holes (BBHs) since many or most galaxies have central massive black holes (BHs). It is possible that some BBHs exist in activ…