87 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Yangzhou UniversityCN12 papers
- Shanghai Jiao Tong UniversityCN9 papers
- Jiangsu UniversityCN8 papers
- Max Planck Institute for PhysicsDE5 papers
- Northeastern UniversityUS5 papers
- Southeast UniversityCN4 papers
- University of Science and Technology of ChinaCN4 papers
- Chinese Academy of SciencesCN3 papers
- Hubei UniversityCN3 papers
- Nanjing UniversityCN3 papers
- National University of SingaporeSG3 papers
- University of Southampton MalaysiaMY3 papers
31 papers · 1 filter
Shadows of quintessence black holes: spherical accretion, photon trajectories, and geodesic observers
Ji-Wen Li, Zi-Liang Wang, Tao-Tao Sui
The presence of a quintessence-like field can influence the black hole shadow through three primary mechanisms: the dynamics of accretion flows, the trajectories of photons, and th…
Energy conditions in static, spherically symmetric spacetimes and effective geometries
Zi-Liang Wang, Emmanuele Battista
Classical energy conditions are investigated in generic static and spherically symmetric spacetimes. In setups with nonconstant , the appearance of horizons can sign…
Dyonic Einstein-Maxwell-scalar black holes: the cold, the hot and the plunge
Shun Chen, Xiao Yan Chew, Jutta Kunz
We investigate dyonic nonlinearly scalarized black holes in Einstein-Maxwell-scalar theory. The domain of existence of scalarized dyonic black holes consists of three branches. The…
Effective dynamics of Janis-Newman-Winicour spacetime
Faqiang Yuan, Shengzhi Li, Zhen Li +1
The effective dynamics of the Janis-Newman-Winicour spacetime inspired by loop quantum gravity is studied. Two different schemes are considered to regularize the Hamiltonian constr…
Geodesic dynamics and multi-inclination images of a non-minimally coupled black hole with a thin accretion disk
Tian-Yu Chen, Yong-Zhuang Li, Xiao-Mei Kuang
In this paper, we investigate the optical properties of a black hole in non-minimal Einstein-Yang-Mills theory, illuminated by a thin accretion disk. In our setup, matter follows s…
Observational Constrains on the Sgr A Black Hole Immersed in a Dark Matter Halo: Shadow and S2 Star Orbit
Zhen Li
It is widely believed that Sgr A, located at the center of our Galaxy, is a supermassive black hole. Recent observations of its shadow and long-term monitoring of the S2 star h…
A Unified Dynamical Systems Framework for Cosmology in Gravity: Generic Features Beyond the Coincident Gauge
Jibitesh Dutta, Wompherdeiki Khyllep, Saikat Chakraborty +2
We present a unified dynamical systems framework for spatially flat FLRW cosmology in gravity, covering all three connection branches via a single set of Hubble-normalised v…
Exploring the role of accretion disk geometry in shaping black hole shadows
Zi-Liang Wang
We study black hole imaging in the context of geometrically thick accretion disks in Schwarzschild spacetime. By decomposing the emitting region into a set of one-dimensional lumin…
Incorporating Backreaction in One-Loop Corrections in Ultra-Slow-Roll Inflation
Cheng-Jun Fang, Zhen-Hong Lyu, Chao Chen +1
We investigate the one-loop quantum correction to the power spectrum of primordial curvature perturbations in the ultra-slow-roll (USR) inflationary scenario, incorporating the bac…
Dynamical features and shadows of quantum Schwarzschild black hole in effective field theories of gravity
Zi-Liang Wang, Emmanuele Battista
We investigate the properties of the Schwarzschild black hole geometry involving leading one-loop long-distance quantum effects, which arise within the framework of effective field…
Shadow of the Scalar Hairy Black Hole with Inverted Higgs Potential
Kok-Geng Lim, Xiao Yan Chew
We study the imaging of a hairy black hole (HBH) in the Einstein-Klein-Gordon theory, where Einstein gravity is minimally coupled to a scalar potential with …
Thin Accretion Disk Around Rotating Hairy Black Hole: Radiative Property and Optical Appearance
Zhen Li, Xiao-Kan Guo
The gravitational decoupling method systematically generates hairy modifications to the solutions in general relativity due to new gravitational sources. In view of the recent adva…
Geodesic Motion of Test Particles around the Scalar Hairy Black Holes with Asymmetric Vacua
Hongyu Chen, Wei Fan, Xiao Yan Chew
An asymptotically flat hairy black hole (HBH) can exhibit distinct characteristics when compared to the Schwarzschild black hole, due to the evasion of no-hair theorem by minimally…
Constraining matter-bounce scenario from scalar-induced vector perturbations
Mian Zhu, Chao Chen
Bouncing cosmologies, while offering a compelling alternative to inflationary models, face challenges from the growth of vector perturbations during the contracting phase. While li…
Timelike bound orbits and pericenter precession around black hole with conformally coupled scalar hair
Qi Qi, Xiao-Mei Kuang, Yong-Zhuang Li +1
We investigate the geodesic motions of timelike particles around a static hairy black hole with conformally coupled scalar field. We mainly focus on the effects of the scalar charg…
Gravitating Scalarons with Inverted Higgs Potential
Xiao Yan Chew, Kok-Geng Lim
Previously, a class of regular and asymptotically flat gravitating scalar solitons (scalarons) has been constructed in the Einstein--Klein--Gordon (EKG) theory by adopting a phanto…
The simplest model of a scalarized black hole in the Einstein-Klein-Gordon theory
Xiao Yan Chew, Yun Soo Myung
We investigate scalarized black holes in the Einstein-minimally coupled scalar theory with a negative potential . The tachyonic instability is absent from analyzing t…
Precessing and periodic timelike orbits and their potential applications in Einsteinian cubic gravity
Yong-Zhuang Li, Xiao-Mei Kuang
Einsteinian cubic gravity (ECG) is the most general theory up to cubic order in curvature, which have the same graviton spectrum as the Einstein theory. In this paper, we investiga…
Trajectories of photons around a rotating black hole with unusual asymptotics
Yong-Zhuang Li, Xiao-Mei Kuang
Most black hole solutions are characterized with asymptotically flat, or asymptotically (anti) de-Sitter behaviors, but some black holes with unusual asymptotics have also been con…
The effect of scalar hair on the charged black hole with the images from accretions disk
Tao-Tao Sui, Zi-Liang Wang, Wen-Di Guo
In this paper, we investigate the optical properties of a charged black hole with scalar hair (CSH) within the context of four-dimensional Einstein-Maxwell-Dilaton gravity. To achi…
Insights and guidelines on the Cauchy horizon theorems
Xiao Yan Chew, Dong-han Yeom
Recently there has been progress to resolve the issue regarding the non-existence of the Cauchy horizon inside the static, charged, and spherically symmetric black holes. However,…
Scalar Hairy Black Holes with Inverted Mexican Hat Potential
Xiao Yan Chew, Kok-Geng Lim
We numerically construct the asymptotically flat solutions of hairy black holes supported by a symmetric inverted Mexican hat potential with a local minimum and two degenerate glob…
Shadows and rings of a de Sitter-Schwarzschild black hole
Zi-Liang Wang
We study the optical appearance of a de Sitter-Schwarzschild black hole and its distinguishability from a Schwarzschild black hole. By exploring various accretion models and emissi…
Polar modes and isospectrality of Ellis-Bronnikov wormholes
Bahareh Azad, Jose Luis Blázquez-Salcedo, Xiao Yan Chew +2
We consider polar perturbations of static Ellis-Bronnikov wormholes and derive the coupled set of perturbation equations for the gravitational and the scalar field. For massless wo…