8 papers
Constraints on the Intranight Optical Variability of Intermediate-Mass Black Hole Candidates
Wenwen Zuo, Hengxiao Guo, Wanling Liu +12
Intermediate-mass black holes (IMBHs) provide a unique regime for studying accretion variability at the low-mass end of the black hole population, yet their intranight optical vari…
Quasi-periodic Eruptions from Recurrent Satellite Black Hole Transits through Magnetized Galactic Nucleus Accretion Disks
Na Wang, Jing-Tong Xing, Tong Liu +2
Quasi-periodic eruptions (QPEs) are recurrent soft X-ray flares from galactic nuclei, but their origin remains uncertain. The delayed ultraviolet (UV) counterpart detected in Ansky…
The physical mechanism for two rapid changing-look AGNs: SDSS J0225+0030 and SDSS J1723+5504
Shuang-Liang Li, Xinwu Cao, Wei-Min Gu
SDSS J0225+0030 and SDSS J1723+5504 are two turn-on changing-look active galactic nuclei (CL AGNs) with transition timescales shorter than one year. Such short timescales pose a ch…
Disk Instability Model for Quasi-Periodic Eruptions: Investigating Period Dispersion and Peak Temperature
Xin Pan, Shuang-Liang Li, Xinwu Cao +2
Quasi-periodic eruptions (QPEs) are a class of X-ray repeating burst phenomena discovered in recent years. Many models have been proposed to study this phenomenon, there remains si…
The physical mechanism of radio-quiet turn-on changing-look active galactic nuclei
Shuang-Liang Li, Xinwu Cao
It is suggested that the variation of mass accretion rate in accretion disk may be responsible for the occurrence of most changing-look active galactic nuclei (CL AGNs). However, t…
Do all the quasars and high-excitation radio galaxies (HERGs) in the 3CRR catalog contain a magnetically arrested disk (MAD)?
Shuang-Liang Li, Wenwen Zuo, Xinwu Cao
Based on the magnetization, an accretion disk with large-scale magnetic field can be separated into either standard and normal evolution (SANE) or magnetically arrested disk (MAD),…