activity
20242026
most citedUnprecedented Continuum Time Delay Variation Phenomenon in an Active Supermassive Black Hole

1 citations · 2 across the 15 of their papers we have counts for

collaborators

15 papers

astro-ph.HE2026

Jet Power, Bulk Lorentz Factor, Black Hole Spin, and Magnetic Field of Accretion Disk in Jetted Active Galactic Nuclei: A Large Gamma-Ray Emission Sample

Dingrong Xiong, Junhui Fan, Feng Yuan +14

We present a catalog of physical parameters for powerful jet-accretion disk-black hole systems in one of the largest samples of gamma-ray emitting jetted active galactic nuclei (AG…

astro-ph.HE2026

Little Red Dots as Supermassive Counterparts of SS 433: A Hyper-Eddington Accretion Framework

Shuying Zhou, Mouyuan Sun, Xihan Ji +11

High-redshift little red dots (LRDs) are compact sources characterized by V-shaped spectral energy distributions (SEDs), broad emission lines, and often prominent Balmer breaks. Th…

astro-ph.HE2026

Revisiting the X-ray Variability Plane of AGNs: The Significant Role of the Photon Index

Ruisong Xia, Hao Liu, Yongquan Xue +9

X-ray variability provides a powerful probe of the innermost regions of active galactic nuclei (AGNs), offering valuable insights into the accretion process and the structure of th…

astro-ph.HE2026

X-ray Quasi-Periodic Oscillations in Active Galactic Nuclei and Their Implications for the Changing Look Phenomenon

Mouyuan Sun, Shuying Zhou, Jihong Liu +12

X-ray timing of active galactic nuclei (AGN) provides a unique probe of gas accretion onto supermassive black holes (SMBHs). Quasi-periodic oscillations (QPOs), which trace gas dyn…

astro-ph.HE2026★ 1 cited

Illuminating the Mass Gap Through Deep Optical Constraint on a Neutron Star Merger Candidate S250206dm

Zhengyan Liu, Zelin Xu, Ji-an Jiang +35

The gravitational wave (GW) event S250206dm, as the first well-localized neutron star merger candidate potentially located in the mass gap, presented a unique opportunity to probe…

astro-ph.HE2025

Which active galaxies might be neutrino emitters?

Shuying Zhou, Mouyuan Sun, Guobin Mou +4

The IceCube Neutrino Observatory has identified several individual neutrino emitters associated with supermassive black hole accretion phenomena, including blazars, tidal disruptio…

astro-ph.GA2025

Baseline-Aware Dependence fitting for DAmping Timescales (BADDAT): A Nearly Unbiased Approach to Constraining Optical Variability Dependence on Physical Properties of Active Galactic Nuclei

Ruisong Xia, Zhen-Yi Cai, Yongquan Xue +7

Active galactic nuclei (AGNs) exhibit stochastic optical variability, commonly characterized by a damped random walk. The damping timescale is of particular interest because it is…

astro-ph.HE2025

Multiwavelength Observations of the Apparently Non-repeating FRB 20250316A

Ye Li, Hui Sun, Lei Qian +72

The physical origin of fast radio bursts (FRBs) remains uncertain. Although multiwavelength observations have been widely conducted, only Galactic FRB~20200428D is associated with…

astro-ph.GA2025

A Glimpse of Satellite Galaxies in the Milky Way with the 2.5-meter Wide Field Survey Telescope (WFST): Bootes III and Draco

Chao Yang, Zhizheng Pan, Min Fang +34

We carry out deep imaging of the Milky Way satellite galaxies, Bootes III and Draco, with WFST as one pilot observing program to demonstrate the capability of WFST. Combining catal…

astro-ph.GA2025

A characteristic optical variability time scale in jetted active galactic nuclei: a large gamma-ray emission sample

Dingrong Xiong, Mouyuan Sun, Jun-Xian Wang +14

The variability mechanisms from jetted AGNs are still under debate. Here the damped random walk (DRW) model, implemented through Gaussian Processe (GPs), is used to fit the l…

astro-ph.GA2024

Rare Occasions: Tidal Disruption Events Rarely Power the AGNs Observed in Dwarf Galaxies

Joanne Tan, Guang Yang, Jonelle L. Walsh +6

Tidal disruption events (TDEs) could be an important growth channel for massive black holes in dwarf galaxies. Theoretical work suggests that the observed active galactic nuclei (A…

astro-ph.GA2024

How Long Will the Quasar UV/Optical Flickering Be Damped? II. the Observational Test

Guowei Ren, Shuying Zhou, Mouyuan Sun +1

The characteristic timescale at which the variability of active galactic nuclei (AGNs) turns from red noise to white noise can probe the accretion physics around supermassive black…

astro-ph.HE2024★ 1 cited

Unprecedented Continuum Time Delay Variation Phenomenon in an Active Supermassive Black Hole

Shuying Zhou, Mouyuan Sun, Hai-Cheng Feng +12

Resolving the accretion disks and broad line regions (BLRs) of active galactic nuclei (AGNs) can probe the physics behind supermassive black holes (SMBHs) fueling and weigh SMBHs.…

astro-ph.HE2024

Stellar black holes can "stretch'' supermassive black hole accretion disks

Shuying Zhou, Mouyuan Sun, Tong Liu +3

Stellar black holes (sBHs) are widely believed to exist in the accretion disks of active galactic nuclei (AGNs). Previous studies often focus on the transient emission produced by…

astro-ph.HE2024

How long will the quasar UV/optical flickering be damped?

Shuying Zhou, Mouyuan Sun, Zhen-Yi Cai +3

The UV/optical light curves of Active Galactic Nuclei (AGNs) are commonly described by the Damped Random Walk (DRW) model. However, the physical interpretation of the damping times…