8 papers
The Analytical Solutions of Dyonic Black Holes in Einstein-Euler-Heisenberg Theory
Haoyuan Luo, Nan Cao, Xiao Yan Chew +3
Recently, we constructed analytical purely electric and purely magnetic black-hole solutions in Einstein--Euler--Heisenberg theory, while the corresponding dyonic solutions were ob…
Purely Electric, Magnetic, and Dyonic Black Holes in Einstein-Euler-Heisenberg Theory
Haoyuan Luo, Nan Cao, Xiao Yan Chew +3
We investigate static, spherically symmetric charged black holes in Einstein gravity coupled to Euler--Heisenberg (EH) nonlinear electrodynamics, including purely electric, purely…
The Interior of the Scalar Hairy Black Hole with Inverted Higgs Potential
Xiao Yan Chew, Kok-Geng Lim, Dong-han Yeom
We investigate the interior structure of asymptotically flat hairy black holes (HBHs) arising in the Einstein-Klein-Gordon theory with nonpositive-definite scalar potentials, where…
Violation of weak cosmic censorship by the Oppenheimer-Snyder collapse
Il Gyeong Choi, Dong-han Yeom
We consider the possibility that the weak cosmic censorship conjecture can be violated using the Oppenheimer-Snyder collapse model with a perfect fluid star interior. Metric models…
Dynamics of Bronnikov-Ellis wormhole with double-null simulation
Anyuan Xu, Xiao Yan Chew, Dong-han Yeom
We investigate the dynamical collapse of Bronnikov-Ellis (BE) wormhole using the double-null formalism, where its throat is characterized by the coincidence of two curves $r_{,u} =…
Can a naked singularity be formed during the gravitational collapse of a Janis-Newman-Winicour solution?
Xiao Yan Chew, Il Gyeong Choi, Hyuk Jung Kim +1
The Janis-Newman-Winicour (JNW) spacetime possesses a naked singularity, although it represents an exact particle-like solution to the Einstein-Klein-Gordon theory with a massless…
Gravitational Deflection of Light: A Heuristic Derivation at the Undergraduate Level
Hongbin Kim, Dong-han Yeom, Jong Hyun Kim
In this paper, we present a new heuristic derivation of the gravitational deflection of light around the Sun at the undergraduate level. Instead of solving the geodesic equation di…
Hairy Reissner-Nordstrom Black Holes with Asymmetric Vacua
Xiao Yan Chew, Dong-han Yeom
We minimally coupled a scalar potential with asymmetric vacua to the Einstein gravity to numerically construct the hairy Reissner-Nordstrom black hole (RNBH) as a direct gen…