347 citations · 3.9k across the 113 of their papers we have counts for
Showing 1999 · astro-phShow all
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astro-ph1999★ 65 cited
Two Different Accretion Classes in Seyfert 1 Galaxies and QSOs
Youjun Lu, Qingjuan Yu
The mass of the central black hole in Seyfert galaxies and QSOs can be determined from the broad emission lines and the reverberation method. Using the measured black hole mass and…
astro-ph1999★ 22 cited
Iron K-alpha line profiles driven by non-axisymmetric illumination
Qingjuan Yu, Youjun Lu
Previous calculations of Fe K-alpha line profiles are based on axisymmetric emissivity laws. In this paper, we show line profiles driven by non-axial symmetric illumination which r…