2022
DOI: 10.48550/arxiv.2202.08949
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Measuring the Virial Factor in SDSS DR5 Quasars with Redshifted H$β$ and Fe ii Broad Emission Lines

H. T. Liu,
Hai-Cheng Feng,
Sha-Sha Li
et al.

Abstract: Under the hypothesis of gravitational redshift induced by the central supermassive black hole, and based on line widths and shifts of redward shifted Hβ and Fe ii broad emission lines for a sample of 1973 z < 0.8 SDSS DR5 quasars, we measured the virial factor in determining supermassive black hole masses, usually estimated by the reverberation mapping (RM) method or the relevant secondary methods. The virial factor had been believed to be from the geometric effect of broad-line region. The measured virial fac… Show more

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