Yansong Ma

activity

20232026

most citedThe variability of the broad-line Balmer decrement for quasars from the Sloan Digital Sky Survey Reverberation Mapping

6 citations · 6 across the 3 of their papers we have counts for

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astro-ph.GA2025

The virial factor $f$ of the H $β$ Broad-line for NGC 5548 and NGC 4151

Shao-Jun Li, Xiang-Wei Ning, Yan-Song Ma +2

The variability of virial factor $f$ is investigated for two active galactic nucleus, NGC 5548 and NGC 4151, which had been previously reverberation mapped (RM) over 20 times in th…

astro-ph.GA2025

On type 1 active galactic nuclei with double-peaked [O~{\sc iii}]. I. data sample and basic results

Qi Zheng, Yansong Ma, Xueguang Zhang +2

Double-peaked narrow emission lines (DPNELs) might be evidence for the existence of kpc-scale dual AGNs. There are so far large samples of objects with DPNELs in narrow emission li…

The virial factor f of the Hβ Broad-line for NGC 5548 and NGC 4151

On type 1 active galactic nuclei with double-peaked [O~{\sc iii}]. I. data sample and basic results

The virial factor $f$ of the H $β$ Broad-line for NGC 5548 and NGC 4151