8 papers
Periodic orbits and gravitational waveforms around a Schwarzschild black hole with a cloud of strings embedded in perfect fluid dark matter
Ziqiang Cai, Zhi Li, Zhenglong Ban +2
In this study, we explore the dynamics of particle orbits and their corresponding gravitational wave signatures in the vicinity of a Schwarzschild black hole (BH) surrounded by a c…
Connection Between the Shadow Radius and Quasinormal Frequencies for Black Holes in STVG with Perfect Fluid Dark Matter
Ziqiang Cai, Zhi Li, Zhenglong Ban +2
We investigate the connection between black hole shadow and quasinormal mode (QNM) spectra in the context of scalar-tensor-vector gravity (STVG) coupled to perfect fluid dark matte…
Shadow and thin accretion disk around Ayón-Beato-GarcÃa black hole coupled with cloud of strings
Ziqiang Cai, Zhenglong Ban, Lu Wang +2
In this paper, we investigate the shadow and thin accretion disk around Ayón-Beato-GarcÃa (ABG) black hole (BH) coupled with a cloud of strings (CS), characterized by the nonline…
Rotating Charged Black Holes with Scalar Hair Constructed via the Newman-Janis Algorithm: Accretion Disk Structure and Shadow Characteristics
Ziqiang Cai, Zhenglong Ban, Qi-Qi Liang +2
In this paper, we generate a rotating charged black hole (BH) with scalar hair via the Newman--Janis algorithm (NJA) and study its thin accretion disk and shadow. The structure of…
Thin accretion disk around Schwarzschild-like black hole in bumblebee gravity
Ziqiang Cai, Zhenglong Ban, Lu Wang +2
The physical properties and optical appearance of a thin accretion disk surrounding a Schwarzschild-like black hole (BH) are investigated within the framework of bumblebee gravity.…
Probing Einstein-Maxwell-Scalar Black hole via Thin Accretion Disks and Shadows with EHT Observations of M87* and Sgr A*
Yingdong Wu, Ziqiang Cai, Zhenglong Ban +2
We investigated the shadows and thin accretion disks of Einstein-Maxwell-Scalar (EMS) black hole. Firstly, we investigated the influence of EMS parameters on the black hole shadow…