15 papers
Multiscale probing of a Hernquist-type environmental black hole spacetime with the Sgr A* shadow and S2 orbital dynamics
Lai Zhao, Meirong Tang, Zheng-Wen Long +1
The supermassive black hole Sgr A* at the Galactic center provides a unique opportunity to probe the distribution of environmental matter around black holes. In this work, we adopt…
Periodic Orbits and Gravitational Wave Radiation of Black Hole in EGB gravity
Liping Meng, Zhaoyi Xu, Meirong Tang
This paper investigates the orbital dynamics and gravitational wave radiation characteristics of neutral test particles around a static spherically symmetric charged black hole (BH…
Non-minimally coupled Einstein-Yang-Mills black holes: periodic orbits and gravitational wave radiation in extreme mass ratio systems
Xiuqin He, Zhaoyi Xu, Meirong Tang
Extreme mass ratio inspirals (EMRIs), as a core target for future space-based gravitational wave detection, offer crucial observational grounds for testing strong-field gravitation…
Periodic Orbits and Gravitational Radiation from Extreme Mass-Ratio Inspirals as Probes of Black Hole Quantum Hair
Yiru Zhang, Meirong Tang, Zhaoyi Xu
The classical no-hair theorem states that stationary black holes in general relativity can be completely described by only a small set of global parameters. Within this framework,…
Scalar-tensor-vector gravity theory is tested by black hole photon rings
Qiao Yue, Zhaoyi Xu, Meirong Tang
This paper investigates the photon ring and shadow structure of the Reissner-Nordström black hole in the scalar-tensor-vector gravitational framework. The black hole is characteri…
Shadows and Observational Images of a Schwarzschild-like Black Hole Surrounded by a Dehnen-type Dark Matter Halo
Zuting Luo, Meirong Tang, Zhaoyi Xu
This paper investigates the optical appearance of a Schwarzschild-like black hole (BH) surrounded by a Dehnen-(1, 4, 5/2) type dark matter (DM) halo, with a focus on how the DM hal…