69 citations · 74 across the 20 of their papers we have counts for
23 papers
Superradiant Bose--Einstein condensates around Kerr black holes
Sen Guo, Lin Wen, Xiao-Xiong Zeng
Ultralight bosonic dark matter can accumulate around a rotating black hole, where superradiance amplifies the field until a macroscopic cloud forms. Whether such a cloud behaves as…
Polarization images of non-topological soliton Bardeen boson stars
Xiao-Xiong Zeng, Chen-Yu Yang, Ke-Jian He +1
In this study, we investigate the polarized images of non-topological soliton Bardeen boson stars by solving the coupled Einstein nonlinear electrodynamics complex scalar field equ…
Imprints of Black Hole Shadows and Polarization Patterns of Various Thick Disks: Bumblebee gravity
Muhammad Israr Aslam, Nazek Alessa, Chen-Yu Yang +1
The main objective of this study is to explore the shadow and polarization patterns of a Kerr-Sen-like BH induced from Bumblebee gravity, which, among other alternative theories of…
Gravitational lensing and observational features of a dynamic black hole
Ke-Jian He, Guo-Ping Li, Li-Fang Li +1
In this work, we investigate the gravitational lensing effects and the dynamic evolution of the shadow of Vaidya black holes by employing backward ray-tracing techniques. Within th…
Repetitive Penrose process in Konoplya-Zhidenko rotating non-Kerr black holes
Xiao-Xiong Zeng, Dong-Ping Su, Ke Wang
This paper investigates the repetitive Penrose process in Konoplya-Zhidenko rotating non-Kerr black hole, exploring the influence of the deformation parameter on the repetitive Pen…
Distinguishing Black Holes and Neutron Stars through Optical Images
Chen-Yu Yang, Xiao-Xiong Zeng
This paper employs the backward ray tracing method to study the optical images of neutron stars under the conditions of a spherical light source and a thin accretion disk, consider…
Imprints of Dark Matter on the Shadow and Polarization Images of a Black Hole Illuminated by Various Thick Disks
Muhammad Israr Aslam, Rabia Saleem, Chen-Yu Yang +1
Based on two distinct thick accretion flow disk models, such as a phenomenological RIAF-like model and an analytical Hou disk model, we investigate the impact of relevant parameter…
Probing Non-rotating Black Hole in Kalb-Ramond Gravity: Imaging and Polarized Signatures Surrounded by Different Thick Accretion Flows
Xiao-Xiong Zeng, Chen-Yu Yang, Muhammad Israr Aslam +1
In this work, we consider a spherically symmetric static black hole metric in Kalb-Ramond (KR) gravity, and investigate the impact of relevant parameters on the black hole shadow a…
Shadow and Polarization Images of Rotating Black Holes in Kalb-Ramond Gravity Illuminated by Several Thick Accretion Disks
Chen-Yu Yang, Huan Ye, Xiao-Xiong Zeng
Using ray-tracing techniques, this paper investigates the optical and polarization images of rotating black holes in Kalb-Ramond (KR) gravity illuminated by thick accretion disks.…
Observational features of the Bardeen-boson star with thin disk accretion
Chen-Yu Yang, Huan Ye, Xiao-Xiong Zeng
In this work, we construct spherically symmetric solutions of Bardeen--boson stars within the framework of the Einstein--Klein--Gordon theory coupled to nonlinear electrodynamics b…
Probing Horndeski Gravity via Kerr Black Hole: Insights from Thin Accretion Disks and Shadows with EHT Observations
Xiao-Xiong Zeng, Chen-Yu Yang, M. Israr Aslam +1
In this study, we have considered the Kerr-like black hole (BH) model in Horndeski gravity and analyse the visual characteristics of shadow images under two illumination models, su…
Polarization Images of Solitonic Boson Stars
Xiao-Xiong Zeng, Chen-Yu Yang, Hao Yu +1
This study investigates the polarization characteristics of solitonic boson stars surrounded by a thin accretion disk. By comparing their polarization images with corresponding opt…
Observational signatures and polarized images of rotating charged black holes in Kalb-Ramond Gravity
Chen-Yu Yang, Ke-Jian He, Xiao-Xiong Zeng +1
This paper investigates the shadow images of rotating charged black holes in Kalb-Ramond (KR) gravity, using an accretion disk that is both optically and geometrically thin and loc…
Optical Characteristics of the Kerr-Bertotti-Robinson Black Hole
Xiao-Xiong Zeng, Chen-Yu Yang, Hao Yu
The Kerr-Bertotti-Robinson (Kerr-BR) black hole, a theoretical model of a rotating black hole immersed in a uniform magnetic field, has been proposed recently by Podolsky and Ovcha…
Optical images of massive boson stars with nonlinear electrodynamics
Xiao-Xiong Zeng, Huan Ye, Ke-Jian He +1
This study investigates the optical imaging characteristics of massive boson stars based on a model with Einstein's nonlinear electrodynamics. Under asymptotically flat boundary co…
Kerr-like Black Hole Surrounded by Cold Dark Matter Halo: The Shadow Images and EHT Constraints
Xiao-Xiong Zeng, Chen-Yu Yang, M. Israr Aslam +2
Here we provide shadow images of a Kerr-like black hole (BH) in cold dark matter (CDM) halo illuminated with a celestial light source and a thin accretion disk. The impact of spin…
A Novel Jet Model for the Novikov-Thorne Disk and its Observable Impact
Sen Guo, Pei Wang, Ke-Jian He +3
Recent high-resolution observations have established a strong link between black hole jets and accretion disk structures, particularly in the 3.5 mm wavelength band [Nature. 616, 6…
The observation image of a soliton boson star illuminated by various accretions
Ke-Jian He, Guo-Ping Li, Chen-Yu Yang +1
In this paper, we explore the observable signatures of solitonic boson stars by employing ray-tracing simulations, with celestial spheres and thin accretion disks serving as illumi…
Optical Images of Mini Boson Stars in Palatini Gravity
Xiao-Xiong Zeng, Chen-Yu Yang, Yu-Xiang Huang +3
We investigate the optical properties of mini boson stars within the framework of Palatini gravity, adopting a quadratic form , where is the gravitation…
Optical appearance of the Konoplya-Zhidenko rotating non-Kerr black hole surrounded by a thin accretion disk
Ke-Jian He, Yi Liu, Chen-Yu Yang +1
In this study, we investigate the optical appearance of rotating Konoplya-Zhidenko non-Kerr black holes in the presence of thin accretion disks, with the aim of examining whether t…
Shadow Images of Ghosh-Kumar Rotating Black Hole Illuminated By Spherical Light Sources and Thin Accretion Disks
Chen-Yu Yang, M. Israr Aslam, Xiao-Xiong Zeng +1
This study investigates the astronomical implications of the Ghosh-Kumar rotating Black Hole (BH), particularly its behaviour on shadow images, illuminated by celestial light sourc…
Observational features of the rotating Bardeen black hole surrounded by perfect fluid dark matter
Ke-Jian He, Guo-Ping Li, Chen-Yu Yang +1
By employing ray-tracing techniques, we investigate the shadow images of rotating Bardeen black holes surrounded by perfect fluid dark matter. In this work, two models are consider…
Investigating shadow images and rings of the charged Horndeski black hole illuminated by various thin accretions
Xiao-Jun Gao, Tao-Tao Sui, Xiao-Xiong Zeng +2
In this paper, we investigate the shadows and rings of the charged Horndeski black hole illuminated by accretion flow that is both geometrically and optically thin. We consider two…