120 citations · 438 across the 18 of their papers we have counts for
16 papers · 1 filter
Thermodynamically massless Simpson-Visser black holes
Thanasis Karakasis, Emmanuel N. Saridakis, Zi-Yu Tang
In this work we scrutinize the thermodynamic properties of the Simpson-Visser (SV) spacetime. Working within Einstein gravity coupled to nonlinear electrodynamics (NLED) and a scal…
Photon region and shadow of a rotating 5D black string
Zi-Yu Tang, Xiao-Mei Kuang, Bin Wang +1
To explore the possible clues for the extra dimension from the Event Horizon Telescope (EHT) observations, we study the shadow of the rotating 5D black string in General Relativity…
Rotating -dimensional Black Holes in Einstein-Maxwell-Dilaton Theory
Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang +1
We consider Einstein-Maxwell-Dilaton theory in -dimensions where the coupling between the scalar field and the Maxwell invariant is the dilatonic coupling $f(ϕ) = \exp (-2αϕ…
The length of a compact extra dimension from black hole shadow
Zi-Yu Tang, Xiao-Mei Kuang, Bin Wang +1
Plenty of efforts have been made to explore the black string and its instability, but the fate of the black strings with fewer extra dimensions is still inconclusive. Now starting…
Constraining a modified gravity theory in strong gravitational lensing and black hole shadow observations
Xiao-Mei Kuang, Zi-Yu Tang, Bin Wang +1
We study the strong gravitational lensing effect around rotating black holes in different gravity theories. By calculating the deflection angle of strong gravitational lensing, we…
Photon regions, shadow observables and constraints from M87* of a charged rotating black hole
Yuan Meng, Xiao-Mei Kuang, Zi-Yu Tang
Inspired by the observations of supermassive black hole M87* in \emph{Event Horizon Telescope }(EHT) experiment, a remarkable surge in black hole physics is to use the black hole s…
-Dimensional Black Holes in Gravity
Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang +1
We consider a gravity theory in -dimensions with a self-interacting scalar field non-minimally coupled to gravity. Without specifying the form of the function,…
Exact Black Hole Solutions with a Conformally Coupled Scalar Field and Dynamic Ricci Curvature in Gravity Theories
Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang +1
We report exact black hole solutions in asymptotically flat or (A)dS four-dimensional spacetime with a conformally coupled self-interacting scalar field in gravity. We first…
Black holes of -dimensional gravity coupled to a scalar field
Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang +1
We consider gravity theories in the presence of a scalar field minimally coupled to gravity with a self-interacting potential in -dimensions. Without specifying the f…
Curvature Scalarization of Black Holes in f(R) Gravity
Zi-Yu Tang, Bin Wang, Thanasis Karakasis +1
We consider f(R) gravity theories in the presence of a scalar field minimally coupled to gravity with a self-interacting potential. When the scalar field backreacts to the metric w…
Black Hole Scalarization in Gauss-Bonnet Extended Starobinsky Gravity
Hai-Shan Liu, H. Lu, Zi-Yu Tang +1
We propose a class of higher-derivative gravities that can be viewed as the Gauss-Bonnet extension of the Starobinsky model. The theory admits the Minkowski spacetime vacuum whose…
Exact charged black hole solutions in D-dimensions in f(R) gravity
Zi-Yu Tang, Bin Wang, Eleftherios Papantonopoulos
We consider Maxwell-f(R) gravity and obtain an exact charged black hole solution with dynamic curvature in D-dimensions. Considering a spherically symmetric metric ansatz and witho…
Strong Cosmic Censorship in higher-dimensional Reissner-Nordström-de Sitter spacetime
Hang Liu, Ziyu Tang, Kyriakos Destounis +3
It was recently shown that Strong Cosmic Censorship might be violated for near-extremally-charged black holes in 4-dimensional de Sitter space under scalar perturbations. Here, we…
General Black Hole Solutions in (2+1)-dimensions with a Scalar Field Non-Minimally Coupled to Gravity
Zi-Yu Tang, Yen Chin Ong, Bin Wang +1
We discuss black hole solutions in (2+1)-dimensions with a scalar field non-minimally coupled to Einstein's gravity in the presence of a cosmological constant and a self-interactin…
Lux in obscuro II: Photon Orbits of Extremal AdS Black Holes Revisited
Zi-Yu Tang, Yen Chin Ong, Bin Wang
A large class of spherically symmetric static extremal black hole spacetimes possesses a stable null photon sphere on their horizons. For the extremal Kerr-Newman family, the photo…
Gravitational collapse of massless scalar field in gravity
Cheng-Yong Zhang, Zi-Yu Tang, Bin Wang
We study the spherically symmetric gravitational collapse of massless scalar matter field in asymptotic flat spacetime in gravity. In the Einstein frame of gravity, a…