Journal ArticleDOI
Stability of a Schwarzschild Singularity
TLDR
In this article, it was shown that a Schwarzschild singularity, spherically symmetrical and endowed with mass, will undergo small vibrations about the spherical form and therefore remain stable if subjected to a small nonspherical perturbation.Abstract:
It is shown that a Schwarzschild singularity, spherically symmetrical and endowed with mass, will undergo small vibrations about the spherical form and will therefore remain stable if subjected to a small nonspherical perturbation.read more
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Shadow, quasinormal modes, and quasiperiodic oscillations of rotating Kaluza-Klein black holes
TL;DR: In this article, the authors studied the shadow of rotating Kaluza-Klein (KK) black holes and the connection between the shadow radius and the real part of quasinormal modes (QNMs) in the eiokonal limit.
Journal ArticleDOI
Quasi-normal Modes of Rotating Relativistic Stars: Neutral Modes for Realistic Equations of State
TL;DR: In this article, the authors compute zero-frequency (neutral) quasi-normal f-modes of fully relativistic and rapidly rotating neutron stars using several realistic equations of state (EOSs) for neutron star matter.
ReportDOI
Radiation Boundary Conditions for Maxwell's Equations: A Review of Accurate Time-Domain Formulations
Thomas Hagstrom,Stephen R. Lau +1 more
TL;DR: In this paper, the authors review time-domain formulations of radiation boundary conditions for Maxwell's equations, focusing on methods which can deliver arbitrary accuracy at acceptable computational cost, such as fast evaluations of nonlocal conditions on symmetric and general boundaries, methods based on identifying and evaluating equivalent sources, and local approximations such as the perfectly matched layer and sequences of local boundary conditions.
Journal ArticleDOI
Quasi-normal modes of bumblebee wormhole
TL;DR: In this paper, the quasi-normal frequencies from a bumblebee traversable wormhole were derived via the WKB approximation method for both scalar and gravitational perturbations.
Journal ArticleDOI
Efficient pseudospectral method for the computation of the self-force on a charged particle: Circular geodesics around a Schwarzschild black hole
TL;DR: In this article, a multidomain framework is proposed for the estimation of the self-force of a charged scalar particle orbiting a nonrotating black hole, where the particle is located at the interface between two domains and the presence of the particle and its physical effects appear only through appropriate boundary conditions.