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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Journal ArticleDOI
On Black Hole Stability in Critical Gravities
TL;DR: In this paper, the authors consider extended cosmological gravities with Ricci tensor and scalar squared terms in diverse dimensions and perform linearized analysis around the black holes and show that the spectrum consists of the usual spin-2 massless and ghost massive modes.
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Stability of magnetic black holes in general nonlinear electrodynamics
TL;DR: In this article, the perturbative stability of magnetic black holes in a general class of nonlinear electrodynamics, where the Lagrangian is given by a general function of the field strength of electromagnetic field and its Hodge dual, was studied.
Journal ArticleDOI
How far away is far enough for extracting numerical waveforms, and how much do they depend on the extraction method?
Enrique Pazos,Enrique Pazos,Ernst Nils Dorband,Alessandro Nagar,Carlos Palenzuela,Erik Schnetter,Manuel Tiglio +6 more
TL;DR: A method for extracting gravitational waves from numerical spacetimes which generalizes and refines one of the standard methods based on the Regge-Wheeler-Zerilli perturbation formalism, and analysis of the quasinormal frequencies of the extracted waves shows the possibility that different choices in the wave extraction procedure at a fixed and finite distance may result in relative differences in the waves.
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Environmental effects in gravitational-wave physics: Tidal deformability of black holes immersed in matter
TL;DR: In this paper, the authors study the tidal deformability of configurations of black holes immersed in matter, focusing on two analytical models representing an anisotropic fluid and a thin-shell of matter around a black hole.
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Polar quasi-normal modes of neutron stars with equations of state satisfying the 2 M_0 constraint
TL;DR: In this paper, the authors analyzed the quasinormal mode spectrum of realistic neutron stars by studying the polar modes and derived new phenomenological relations between the frequency and damping time of the wI mode and the f mode.