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20242026
most citedConstraining a disformal Schwarzschild black hole in DHOST theories with the orbit of the S2 star

7 citations · 11 across the 18 of their papers we have counts for

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astro-ph.HE2026

Polarization Signatures of Sgr A* with Tilted Hybrid Magnetic Fields

Yushu Feng, Hao Yin, Songbai Chen +1

The magnetic field geometry in the near-horizon region is very important in shaping polarimetric signatures of black hole images. With a hybrid magnetic field consisting of an axis…

astro-ph.HE2026

Signatures of Lorentz violation in the bright ring for Sgr A* images from radiatively inefficient accretion flows

Cuiyu Zhao, Songbai Chen, Jiliang Jing

We have investigated the effects of Lorentz violation (LV) on the bright ring in Sgr A* images illuminated by the 230 GHz thermal synchrotron emission from radiatively inefficient…

astro-ph.HE2026

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…

gr-qc2026

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…

gr-qc2026

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…