192 citations · 597 across the 10 of their papers we have counts for
Showing 2019Show all
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astro-ph.GA2019★ 49 cited
Discovery of A Mg II Changing-look AGN and its Implications for a Unification Sequence of Changing-look AGNs
Hengxiao Guo, Mouyuan Sun, Xin Liu +5
Changing-Look (CL) is a rare phenomenon of Active Galactic Nuclei (AGNs) that exhibit emerging or disappearing broad lines accompanied by continuum variations on astrophysically sh…
astro-ph.GA2019★ 63 cited
Understanding Broad Mg II Variability in Quasars with Photoionization: Implications for Reverberation Mapping and Changing-Look Quasars
Hengxiao Guo, Yue Shen, Zhicheng He +7
The broad Mg II line in quasars has distinct variability properties compared with broad Balmer lines: it is less variable, and usually does not display a "breathing" mode, the incr…
astro-ph.GA2019★ 62 cited
The Sloan Digital Sky Survey Reverberation Mapping Project: Low-Ionization Broad-Line Widths and Implications for Virial Black Hole Mass Estimation
Shu Wang, Yue Shen, Linhua Jiang +8
The width of the broad emission lines in quasars is commonly characterized either by the full-width-at-half-maximum (FWHM) or the square root of the second moment of the line profi…