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551 papers
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XII. Reverberation Mapping Results for 15 PG Quasars from a Long-Duration High-Cadence Campaign
Chen Hu, Sha-Sha Li, Sen Yang +15
We present the first results from long-term high-cadence spectroscopic monitoring of 15 PG quasars with relatively strong Fe II emission as a part of a broader reverberation mappin…
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…
The Structure and Morphology of Galaxies during the Epoch of Reionization Revealed by JWST
Wen Sun, Luis C. Ho, Ming-Yang Zhuang +3
We analyze 347 galaxies at redshift using JWST observations from the CEERS program by fitting a two-dimensional parametric model simultaneously to the seven-filter NIRCam…
VLBI Observations of a sample of Palomar-Green quasars II: characterising the parsec-scale radio emission
Ailing Wang, Tao An, Yingkang Zhang +4
This study uses multi-frequency Very Long Baseline Interferometry (VLBI) to study the radio emission from 10 radio-quiet quasars (RQQs) and four radio-loud quasars (RLQs). The dive…
On the dominant role of wind in the quasar feedback mode in the late stage evolution of massive elliptical galaxies
Bocheng Zhu, Feng Yuan, Suoqing Ji +2
In this paper we investigate the role of AGN feedback on the late stage evolution of elliptical galaxies by performing high-resolution hydrodynamical simulation in the {\it MACER}…
Electromagnetic signatures of white dwarf collisions in AGN discs
Shu-Rui Zhang, Yan Luo, Xiao-Jun Wu +3
In the inner region of the disc of an active galactic nucleus (AGN), the collision of two white dwarfs (WDs) through Jacobi capture might be inevitable, leading to a Type Ia supern…