136 citations · 1.3k across the 55 of their papers we have counts for
27 papers · 1 filter
Gravitational Lensing by Transparent Janis-Newman-Winicour Naked Singularities
Deyou Chen, Yiqian Chen, Peng Wang +2
The Janis-Newman-Winicour (JNW) spacetime can describe a naked singularity with a photon sphere that smoothly transforms into a Schwarzschild black hole. Our analysis reveals that…
Scalarized Kerr-Newman Black Holes
Guangzhou Guo, Peng Wang, Houwen Wu +1
In this paper, we construct scalarized rotating black holes within the framework of Einstein-Maxwell-scalar models. These models incorporate non-minimal couplings that can induce t…
Gravitational Lensing by Born-Infeld Naked Singularities
Yiqian Chen, Peng Wang, Houwen Wu +1
We examine the gravitational lensing phenomenon caused by photon spheres in the Born-Infeld naked singularity spacetime, where gravity is coupled with Born-Infeld electrodynamics.…
Superradiance Instabilities of Charged Black Holes in Einstein-Maxwell-scalar Theory
Guangzhou Guo, Peng Wang, Houwen Wu +1
We study time evolutions of charged scalar perturbations on the background of a charged hairy black hole, in which the perturbations can be governed by a double-peak effective pote…
Black Holes with Multiple Photon Spheres
Guangzhou Guo, Yuhang Lu, Peng Wang +2
Recently, asymptotically-flat black holes with multiple photon spheres have been discovered and found to produce distinctive observational signatures. In this paper, we focus on wh…
Observational Appearance of a Freely-falling Star in an Asymmetric Thin-shell Wormhole
Yiqian Chen, Peng Wang, Houwen Wu +1
It has been recently reported that, at late times, the total luminosity of a star freely falling in black holes decays exponentially with time, and one or two series of flashes wit…
Appearance of an Infalling Star in Black Holes with Multiple Photon Spheres
Yiqian Chen, Guangzhou Guo, Peng Wang +2
Photon spheres play a pivotal role in the imaging of luminous objects near black holes. In this paper, we examine observational appearances of a star freely falling in hairy black…
Gravitational Lensing by Black Holes with Multiple Photon Spheres
Guangzhou Guo, Xin Jiang, Peng Wang +1
We study gravitational lensing of light by hairy black holes, which, in a certain parameter regime, can possess two photon spheres of different size outside the event horizon. In p…
Echoes from Hairy Black Holes
Guangzhou Guo, Peng Wang, Houwen Wu +1
We study the waveforms of time signals produced by scalar perturbations in static hairy black holes, in which the perturbations can be governed by a double-peak effective potential…
Quasinormal Modes of Black Holes with Multiple Photon Spheres
Guangzhou Guo, Peng Wang, Houwen Wu +1
For a static and spherically symmetric black hole, a photon sphere is composed of circular null geodesics of fixed radius, and plays an important role in observing the black hole.…
Testing Kerr Black Hole Mimickers with Quasi-Periodic Oscillations from GRO J1655-40
Xin Jiang, Peng Wang, Houwen Wu +1
The measurements of quasi-periodic oscillations (QPOs) provide a quite powerful tool to test the nature of astrophysical black hole candidates in the strong gravitational field reg…
Thermodynamics and Phase Structure of an Einstein-Maxwell-scalar Model in Extended Phase Space
Guangzhou Guo, Peng Wang, Houwen Wu +1
In this paper, we study thermodynamics and phase structure of asymptotically AdS hairy and Reissner-Nordström-AdS (RNAdS) black holes in the extended phase space, where the cosmolo…
Photon Ring and Observational Appearance of a Hairy Black Hole
Qingyu Gan, Peng Wang, Houwen Wu +1
Recently, the image of a Schwarzschild black hole with an accretion disk has been revisited, and it showed that the "photon ring", defined as highly bent light rays that intersect…
Photon Spheres and Spherical Accretion Image of a Hairy Black Hole
Qingyu Gan, Peng Wang, Houwen Wu +1
In this paper, we first consider null geodesics of a class of charged, spherical and asymptotically flat hairy black holes in an Einstein-Maxwell-scalar theory with a non-minimal c…
Scalarized Einstein-Maxwell-scalar Black Holes in Anti-de Sitter Spacetime
Guangzhou Guo, Peng Wang, Houwen Wu +1
In this paper, we study spontaneous scalarization of asymptotically anti-de Sitter charged black holes in the Einstein-Maxwell-scalar model with a non-minimal coupling between the…
Scalarized Einstein-Born-Infeld-scalar Black Holes
Peng Wang, Houwen Wu, Haitang Yang
The phenomenon of spontaneous scalarization of Reissner-Nordström (RN) black holes has recently been found in an Einstein-Maxwell-scalar (EMS) model due to a non-minimal coupling b…
Extended Phase Space Thermodynamics for Black Holes in a Cavity
Peng Wang, Houwen Wu, Haitang Yang +1
In this paper, we extend the phase space of black holes enclosed by a spherical cavity of radius to include as a thermodynamic volume. The thermodyna…
Validity of Thermodynamic Laws and Weak Cosmic Censorship for AdS Black Holes and Black Holes in a Cavity
Peng Wang, Houwen Wu, Shuxuan Ying
By throwing a test charged particle into a Reissner-Nordstrom (RN) black hole, we test the validity of the first and second laws of thermodynamics and weak cosmic censorship conjec…
Thermodynamic Geometry of AdS Black Holes and Black Holes in a Cavity
Peng Wang, Houwen Wu, Haitang Yang
The thermodynamic geometry has been proved to be quite useful in understanding the microscopic structure of black holes. We investigate the phase structure, thermodynamic geometry…
Phase Structures and Transitions of Born-Infeld Black Holes in a Grand Canonical Ensemble
Kangkai Liang, Peng Wang, Houwen Wu +1
To make a Born-Infeld (BI) black hole thermally stable, we consider two types of boundary conditions, i.e., the asymptotically anti-de Sitter (AdS) space and a Dirichlet wall place…
Thermodynamics and Weak Cosmic Censorship Conjecture in Nonlinear Electrodynamics Black Holes via Charged Particle Absorption
Peng Wang, Houwen Wu, Haitang Yang
We first obtain the -dimensional asymptotically AdS charged black hole solution in general nonlinear electrodynamics (NLED). We then use the Hamilton-Jacobi method to describe t…
Thermodynamics and Phase Transition of a Nonlinear Electrodynamics Black Hole in a Cavity
Peng Wang, Houwen Wu, Haitang Yang
We discuss the thermodynamics of a general nonlinear electrodynamics (NLED) asymptotically flat black hole enclosed in a finite spherical cavity. A canonical ensemble is considered…
Effects of quantum gravity on black holes
Deyou Chen, Houwen Wu, Haitang Yang +1
In this review, we discuss effects of quantum gravity on black hole physics. After a brief review of the origin of the minimal observable length from various quantum gravity theori…
Fermion's tunnelling with effects of quantum gravity
Deyou Chen, Houwen Wu, Haitang Yang
In this paper, using Hamilton-Jacobi method, we address the tunnelling of fermions in a 4-dimensional Schwarzschild spacetime. Base on the generalized uncertainty principle, we int…