5 papers
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…
Reincarnations of massive stars in active galactic nucleus discs
Jing-Tong Xing, Tong Liu, Jiao-Zhen She
The origin and evolution of massive stars in active galactic nucleus (AGN) discs remain uncertain. We develop a semi-analytical model that follows the evolution of an embedded core…
Migration Traps as Variability Attractors: Optical/UV Signatures of Embedded Stellar-Mass Black Holes in Active Galactic Nucleus Disks
Jing-Tong Xing, Tong Liu, Mouyuan Sun +5
We investigate whether embedded stellar-mass black holes (sBHs) in active galactic nucleus (AGN) disks can leave observable optical/UV variability signatures through migration-trap…
Variabilities driven by satellite black hole migration in AGN disks
Jing-Tong Xing, Tong Liu, Bao-Quan Huang +1
The physical origin of active galactic nucleus (AGN) variability remains unclear. Here we propose that the magnetic reconnection induced by the migration of satellite black holes (…
Short-lived repeating fast radio bursts from tidal disruption of white dwarfs by intermediate-mass black holes
Jing-Tong Xing, Tong Liu
The origin of repeating fast radio bursts (RFRBs) is still a mystery. We propose that short-lived RFRBs might be triggered from the tidal disruption of white dwarfs (WDs) by interm…