6 papers
A Short-timescale Negative Optical Continuum Lag in SDSS J083717.88+191647
Chen MuLin, Cheng PeiZhen, Chen XingQian +4
Continuum reverberation mapping (RM) is a powerful technique for constraining the accretion disk structure in active galactic nuclei (AGNs). In typical cases, the shorter-wavelengt…
Optical QPOs with different periodicities in CSS and ZTF light curves of the quasar 4C 50.43
Liao GuiLin, Chen XingQian, Cheng PeiZhen +1
Long-standing optical quasi-periodic oscillations (QPOs) with periodicity of hundreds to thousands of days have been accepted as indicators for central sub-pc binary black hole sys…
AGN-Driven Biconical Outflows as the Origin of the Double-Peaked [O~{\sc iii}] doublet in SDSS J134733.36+121724.27
PeiZhen Cheng, XingQian Chen, GuiLin Liao +4
In this manuscript, we recheck the spectroscopic properties of SDSS J134733.36+121724.27 (4C+12.50), confirming the presence of the double-peaked [O~{\sc iii}]Ã…
A gravitational acceleration model to explain the double-peaked narrow emission lines shifted in the same direction
XingQian Chen, GuiLin Liao, Qi Zheng +1
In this manuscript, we propose, for the first time, an oversimplified but potentially effective gravitational acceleration model to interpret the double-peaked narrow emission line…
An improved Seyfert-LINER classification line in the [N~{\sc ii}] BPT diagram
PeiZhen Cheng, XingQian Chen, GuiLin Liao +3
In this manuscript, an improved Seyfert-LINER classification line (= S-L line) is proposed in the [N~{\sc ii}] BPT diagram, based on a sample of 47,968 low redshift narrow emission…
Optical QPOs with dual periodicities 1103days and 243days in the blue quasar SDSS J100438.8+151056
GuiLin Liao, XingQian Chen, Qi Zheng +2
This manuscript investigates the possible existence of a binary supermassive black holes (BSMBH) system in the blue quasar SDSS J100438.8+151056 (=SDSS J1004+1510) at z=0.219 based…