136 citations · 2k across the 87 of their papers we have counts for
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Early-Time Nonlinear Growth in an Unstable Q-Ball Hairy Black Hole
Lang Cheng, Guangzhou Guo, Peng Wang +1
Early-time evolution away from an unstable equilibrium in a nonlinear system is often expected to be governed by the associated linear instability. Combining full nonlinear evoluti…
Spin-induced Scalarized Black Holes in Einstein-Maxwell-scalar Models
Lang Cheng, Guangzhou Guo, Peng Wang +1
We construct spin-induced scalarized black hole solutions in a class of Einstein-Maxwell-scalar models, where a scalar field is non-minimally coupled to the electromagnetic field.…
Spin-induced Scalar Clouds around Kerr-Newman Black Holes
Guangzhou Guo, Peng Wang, Tianshu Wu +1
Recent studies have demonstrated that a scalar field non-minimally coupled to the electromagnetic field can experience a spin-induced tachyonic instability near Kerr-Newman black h…
Polarized Image of a Synchrotron-emitting Ring in Einstein-Maxwell-scalar Theory
Yiqian Chen, Lang Cheng, Peng Wang +1
This study investigates polarized images of an equatorial synchrotron-emitting ring surrounding hairy black holes within the Einstein-Maxwell-scalar theory. Our analysis demonstrat…
Observational Signatures of Traversable Wormholes
Yiqian Chen, Lang Cheng, Peng Wang +1
In this paper, we study the observational signatures of traversable Simpson-Visser wormholes illuminated by luminous celestial spheres and orbiting hot spots. We demonstrate that w…
Stationary Scalar Clouds around Kerr-Newman Black Holes
Guangzhou Guo, Peng Wang, Tianshu Wu +1
This study investigates scalar clouds around Kerr-Newman black holes within the Einstein-Maxwell-scalar model. Tachyonic instabilities are identified as the driving mechanism for s…
Observations of Orbiting Hot Spots around Scalarized Reissner-Nordström Black Holes
Yiqian Chen, Peng Wang, Haitang Yang
This paper investigates the observational signatures of hot spots orbiting scalarized Reissner-Nordström black holes, which have been reported to possess multiple photon spheres. I…
Interferometric Signatures of Black Holes with Multiple Photon Spheres
Yiqian Chen, Peng Wang, Haitang Yang
It has been reported that the photon ring structure in black hole images produces strong and universal interferometric signatures on long interferometric baselines, holding promise…
Observations of Orbiting Hot Spots around Naked Singularities
Yiqian Chen, Peng Wang, Haitang Yang
Recently, it has been reported that photons can traverse naked singularities in the Janis-Newman-Winicour and Born-Infeld spacetimes when these singularities are appropriately regu…
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…
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…