226 citations · 2.2k across the 50 of their papers we have counts for
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astro-ph2003★ 59 cited
The black hole--bulge relation in AGNs
W. Bian, Y. Zhao
We used the widths of H and [OIII] emission lines to investigate the black hole--bulge relation in radio-loud AGNs, radio-quiet AGNs and NLS1s. The central black hole mass, $M_{…
astro-ph2003★ 45 cited
Accretion rates and accretion efficiency in AGNs
Bian Weihao, Zhao Yongheng
We used the standard geometrical thin accretion theory to obtain the accretion rates in Seyfert 1 galaxies and quasars. Combining accretion rates with the bolometric luminosity, we…
astro-ph2003★ 13 cited
Timescales of Soft X-Ray Variability and Physical Constraints in Agns
W. Bian, Y. Zhao
We present soft X-ray variability time-scales for 65 active galactic nuclei (AGNs) derived from ROSAT/PSPC pointing data. For these 65 objects with obvious exponential increasing o…