12 papers
Signatures of Lorentz violation in bright ring for Sgr A* images by radiation ineffective accretion flows
Cuiyu Zhao, Songbai Chen, Jiliang Jing
We have investigated effects of Lorentz violation (LV) on bright ring in Sgr A* images illuminated by the 230 GHz thermal synchrotron emission from radiation ineffective accretion…
Circular polarization images of Sgr A* for different magnetic field geometries
Hao Yin, Songbai Chen, Jiliang Jing
Sgr A* exhibits a persistent negative circular polarization (CP) at 230\,GHz, offering a powerful probe of the magnetic field geometry in its accretion flow. Using a stationary sem…
Vacuum breakdown in a misaligned magnetized Kerr spacetime
Ruixin Yang, Songbai Chen, Jiliang Jing
Electron-positron () pair creation by vacuum breakdown around compact objects is believed to power high-energy astrophysical transients like gamma-ray bursts (GRBs). In…
Bright ring features and polarization structures in Kerr-Sen black hole images illuminated by radiatively inefficient accretion flows
Hao Yin, Songbai Chen, Jiliang Jing
Using general relativistic radiative transfer (GRRT) simulations, we investigate the bright ring features and polarization structures in images of the Kerr-Sen black hole associate…
Shadow of a circular disformal Kerr black hole beyond GR
Fen Long, Songbai Chen, Jiliang Jing
We have studied the shadows of a circular disformal Kerr black hole with a deformation parameter, which represents a rotating solution within a generalized scalar-tensor framework…
Effects of tidal charge on Blandford-Znajek process around braneworld black holes
Ruixin Yang, Songbai Chen, Jiliang Jing
The Blandford-Znajek (BZ) process is a pivotal mechanism to efficiently extract the energy from a rotating black hole (BH) via its plasma-filled magnetosphere in relativistic astro…