948 citations · 3.4k across the 53 of their papers we have counts for
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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…
astro-ph1999★ 49 cited
The dynamics of Plutinos
Qingjuan Yu, Scott Tremaine
Plutinos are Kuiper-belt objects that share the 3:2 Neptune resonance with Pluto. The long-term stability of Plutino orbits depends on their eccentricity. Plutinos with eccentricit…