Publications (10)
Clumpy accretion onto black holes. I. Clumpy-ADAF structure and radiation
J. -M. Wang, C. Cheng, Y. -R. Li
In this paper, we investigate the dynamics of clumps embedded in and confined by the advection-dominated accretion flows (ADAF), in which collisions among the clumps are neglected.…
Accretion Disks in Active Galactic Nuclei: Gas Supply Driven by Star Formation
J. -M. Wang, C. -S. Yan, H. -Q. Gao +3
Self-gravitating accretion disks collapse to star-forming(SF) regions extending to the inner edge of the dusty torus in active galactic nuclei (AGNs). A full set of equations inclu…
Accretion-modified Stars in Accretion Disks of Active Galactic Nuclei: the Low-luminosity Cases and an Application to Sgr A
J. -M. Wang, J. -R. Liu, Y. -R. Li +3
In this paper, we investigate the astrophysical processes of stellar-mass black holes (sMBHs) embedded in advection-dominated accretion flows (ADAFs) of supermassive black holes (S…
Star Formation in Self-gravitating Disks in Active Galactic Nuclei. III. Efficient Production of Iron and Infrared Spectral Energy Distributions
J. -M. Wang, S., Zhai +7
Strong iron lines are a common feature of the optical spectra of active galactic nuclei (AGNs) and quasars from to the local Universe, and [Fe/Mg] ratios do not show co…
Dynamical evidence of the sub-parsec counter-rotating disc for a close binary of supermassive black holes in the nucleus of NGC 1068
J. -M. Wang, Y. -Y. Songsheng, Y. -R. Li +2
It arises a puzzle in \NGC\, how to secularly maintain the counter-rotating disc from to pc unambiguously detected by recent ALMA observations of molecular gas. Upon fur…
Star formation in self-gravitating disks in active galactic nuclei. I. Metallicity gradients in broad line regions
J. -M. Wang, J. -Q. Ge, C. Hu +6
It has been suggested that the high metallicity generally observed in active galactic nuclei (AGNs) and quasars originates from ongoing star formation in the self-gravitating part…
Supermassive black holes with high accretion rates in active galactic nuclei: I. First results from a new reverberation mapping campaign
P. Du, C. Hu, K. -X. Lu +7
We report first results from a large project to measure black hole (BH) mass in high accretion rate active galactic nuclei (AGNs). Such objects may be different from other AGNs in…
Spiral Arms in Broad-line Regions of Active Galactic Nuclei. I. Reverberation and Differential Interferometric Signals of Tightly Wound Cases
J. -M. Wang, P. Du, Y. -Y. Songsheng +1
As a major feature in spectra of active galactic nuclei, broad emission lines deliver information of kinematics and spatial distributions of ionized gas surrounding the central sup…
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XIII. Ultraviolet Time Lag of H Emission in Mrk 142
V. C. Khatu, S. C. Gallagher, K. Horne +17
We performed a rigorous reverberation-mapping analysis of the broad-line region (BLR) in a highly accreting () active galactic nucleus, Markarian 142 (…
Episodic Random Accretion and the Cosmological Evolution of Supermassive Black Hole Spins
J. -M. Wang, C. Hu, Y. -R. Li +7
The growth of supermassive black holes (BHs) located at the centers of their host galaxies comes mainly from accretion of gas, but how to fuel them remains an outstanding unsolved…