226 citations · 1.4k across the 19 of their papers we have counts for
19 papers
Supermassive Black Hole and Broad-line Region in NGC~5548: Results from Five-season Reverberation Mapping
Kai-Xing Lu, Jin-Ming Bai, Jian-Min Wang +9
NGC 5548 is one of the active galactic nuclei (AGN) selected for our long-term spectroscopic monitoring with the Lijiang 2.4~m telescope, aiming at investigating the origin and evo…
Velocity-resolved Reverberation Mapping of Changing-look Active Galactic Nucleus NGC~4151 During Outburst Stage: Evidence for Kinematics Evolution of Broad-line Region
Sha-Sha Li, Hai-Cheng Feng, H. T. Liu +6
Changing-look active galactic nucleus NGC~4151, which has attracted a lot of attention, is undergoing the second dramatic outburst stage in its evolutionary history. To investigate…
Application of the space-based optical interferometer towards measuring cosmological distances of quasars
Ying-Ke Huang, Yue-Dong Fang, Kai-Xing Lu +6
Measuring the quasar distance through joint analysis of spectroastrometry (SA) and reverberation mapping (RM) observations is a new method for driving the development of cosmology.…
Reverberation Mapping Measurements of Black Hole Masses and Broad-Line Region Kinematics in Mrk 817 and NGC 7469
Kai-Xing Lu, Jian-Guo Wang, Zhi-Xiang Zhang +7
We present the results from a spectroscopic monitoring campaign to obtain reverberation-mapping measurements and investigate the broad-line region kinematics for active galactic nu…
A correction method for the telluric absorptions and application to Lijiang Observatory
Kai-Xing Lu, Zhi-Xiang Zhang, Ying-Ke Huang +7
Observing a telluric standard star for correcting the telluric absorption lines of spectrum will take a significant amount of precious telescope time, especially in the long-term s…
Broad-line Region of the Quasar PG 2130+099 from a Two-Year Reverberation Mapping Campaign with High Cadence
Chen Hu, Yan-Rong Li, Pu Du +12
As one of the most interesting Seyfert 1 galaxies, PG 2130+099 has been the target of several reverberation mapping (RM) campaigns over the years. However, its measured broad H…
Supermassive black holes with high accretion rates in active galactic nuclei: X. Optical variability characteristics
Kai-Xing Lu, Ying-Ke Huang, Zhi-Xiang Zhang +10
We compiled a sample of 73 active galactic nuclei (AGNs) with reverberation mapping (RM) observations from RM campaigns including our ongoing campaign of monitoring super-Eddington…
Reverberation mapping of narrow-line Seyfert 1 galaxy I Zwicky 1: black hole mass
Ying-Ke Huang, Chen Hu, Yu-Lin Zhao +11
We report results of the first reverberation mapping campaign of I Zwicky 1 during -, which showed unambiguous reverberations of the broad H line emission to the var…
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. VIII. Structure of the Broad-Line Region and Mass of the Central Black Hole in Mrk 142
Yan-Rong Li, Yu-Yang Songsheng, Jie Qiu +9
This is the eighth in a series of papers reporting on a large reverberation mapping campaign to measure black hole (BH) mass in high accretion rate active galactic nuclei (AGNs). W…
Kinematics of the Broad-line Region of 3C 273 from a Ten-year Reverberation Mapping Campaign
Zhi-Xiang Zhang, Pu Du, Paul S. Smith +9
Despite many decades of study, the kinematics of the broad-line region of 3C~273 are still poorly understood. We report a new, high signal-to-noise, reverberation mapping campaign…
A High-Quality velocity-delay map of the broad-line region in NGC 5548
Ming Xiao, Pu Du, Kai-Xing Lu +10
NGC 5548 has been well spectroscopically monitored for reverberation mapping of the central kinematics by 19 campaigns. Using the maximum entropy method in this Letter, we build up…
Supermassive black holes with high accretion rates in active galactic nuclei. VII. Reconstruction of velocity-delay maps by maximum entropy method
Ming Xiao, Pu Du, Keith D. Horne +11
As one of the series of papers reporting on a large reverberation mapping campaign, we apply the maximum entropy method (MEM) to 9 narrow-line Seyfert 1 galaxies with super-Eddingt…
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. IX 10 New Observations of Reverberation Mapping and Shortened H Lags
Pu Du, Zhi-Xiang Zhang, Kai Wang +10
As one of the series of papers reporting on a large reverberation mapping campaign of super-Eddington accreting massive black holes (SEAMBHs) in active galactic nuclei (AGNs), we p…
A Possible ~20 yr Periodicity in Long-term Optical Photometric and Spectral Variations of the Nearby Radio-Quiet Active Galactic Nucleus Ark 120
Yan-Rong Li, Jian-Min Wang, Zhi-Xiang Zhang +15
We study the long-term variability in the optical monitoring database of Ark~120, a nearby radio-quiet active galactic nucleus (AGN) at a distance of 143 Mpc (z=0.03271). We compil…
Reverberation Mapping of the Broad-line Region in NGC 5548: Evidence for Radiation Pressure?
Kai-Xing Lu, Pu Du, Chen Hu +8
NGC 5548 is the best-observed reverberation-mapped active galactic nucleus with long-term, intensive monitoring. Here we report results from a new observational campaign between Ja…
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. V. A New Size-Luminosity Scaling Relation for the Broad-Line Region
Pu Du, Kai-Xing Lu, Zhi-Xiang Zhang +12
This paper reports results of the third-year campaign of monitoring super-Eddington accreting massive black holes (SEAMBHs) in active galactic nuclei (AGNs) between 2014-2015. Ten…
Spectroscopic Indication for a Centi-parsec Supermassive Black Hole Binary in the Galactic Center of NGC 5548
Yan-Rong Li, Jian-Min Wang, Luis C. Ho +8
As a natural consequence of cosmological hierarchical structure formation, sub-parsec supermassive black hole binaries (SMBHBs) should be common in galaxies but thus far have elude…
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. VI. Velocity-resolved Reverberation Mapping of H Line
Pu Du, Kai-Xing Lu, Chen Hu +9
In the sixth of the series of papers reporting on a large reverberation mapping (RM) campaign of active galactic nuclei (AGNs) with high accretion rates, we present velocity-resolv…
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. IV. H Time Lags and Implications for Super-Eddington Accretion
Pu Du, Chen Hu, Kai-Xing Lu +13
We have completed two years of photometric and spectroscopic monitoring of a large number of active galactic nuclei (AGNs) with very high accretion rates. In this paper, we report…