Results 21 to 30 of about 51,175 (198)
A note on linearized stability of Schwarzschild thin-shell wormholes with variable equations of state [PDF]
, 2015 We discuss how the assumption of variable equation of state (EoS) allows the elimination of the instability at equilibrium throat radius $a_0=3M$ featured by previous Schwarzschild thin-shell wormhole models.
Varela, Victor
core +1 more source
Analytic solutions in non-linear massive gravity [PDF]
, 2011 We study spherically symmetric solutions in a covariant massive gravity model, which is a candidate for a ghost-free non-linear completion of the Fierz-Pauli theory.
Koyama, Kazuya +2 more
core +2 more sources
Effects of Born–Infeld electrodynamics on black hole shadows
European Physical Journal C: Particles and Fields, 2022 In this work, we study the shadow of Born–Infeld (BI) black holes with magnetic monopoles and Schwarzschild black holes immersed in the BI uniform magnetic field. Illuminated by a celestial sphere, black hole images are obtained by using the backward ray-
Aoyun He +4 more
doaj +1 more source
Dense spectrum of resonances and spin-1/2 particle capture in a near-black-hole metric [PDF]
, 2013 We show that a spin-1/2 particle in the gravitational field of a massive body of radius R which slightly exceeds the Schwarzschild radius r_s, possesses a dense spectrum of narrow resonances. Their lifetimes and density tend to infinity in the limit R ->
Berengut, J. C. +3 more
core +2 more sources
Where do moving punctures go? [PDF]
, 2006 Currently the most popular method to evolve black-hole binaries is the ``moving puncture'' method. It has recently been shown that when puncture initial data for a Schwarzschild black hole are evolved using this method, the numerical slices quickly lose ...
Brügmann, Bernd +5 more
core +5 more sources
, 2016 We consider the Schwarzschild black hole and show how, in a theory with limiting curvature, the physical singularity "inside it" is removed. The resulting spacetime is geodesically complete.
Chamseddine, Ali H. +1 more
core +5 more sources
Shadow of a black hole surrounded by dark matter
Physics Letters B, 2019 We consider a simple spherical model consisting of a Schwarzschild black hole of mass M and a dark matter of mass ΔM around it. The general formula for the radius of black-hole shadow has been derived in this case.
R.A. Konoplya
doaj +1 more source
Universe, 2022 In this work, the static cosmological model of the Schwarzschild solution for the solar system is proposed taking into account the cosmological constant in the equation of the general theory of relativity (GTR) proposed by A. Einstein.
Alvaro Humberto Salas Salas +2 more
doaj +1 more source
Can Schwarzschildean gravitational fields suppress gravitational waves? [PDF]
, 2001 Gravitational waves in the linear approximation propagate in the Schwarzschild spacetime similarly as electromagnetic waves. A fraction of the radiation scatters off the curvature of the geometry.
A. Garat +28 more
core +4 more sources
Black hole interior from loop quantum gravity [PDF]
, 2008 In this paper we calculate modifications to the Schwarzschild solution by using a semiclassical analysis of loop quantum black hole. We obtain a metric inside the event horizon that coincides with the Schwarzschild solution near the horizon but that is ...
Modesto, Leonardo
core +4 more sources