Results 11 to 20 of about 519,784 (286)
Shadow Images of a Rotating Dyonic Black Hole with a Global Monopole Surrounded by Perfect Fluid
Universe, 2020 In this paper, we revisit the rotating global monopole metric and extend the metric to a rotating dyonic global monopole in the presence of a perfect fluid. We then show that the surface topology at the event horizon, related to the metric computed, is a
Sumarna Haroon +2 more
doaj +3 more sources
Perfect Fluid Spacetimes and Gradient Solitons
Journal of Nonlinear Mathematical Physics, 2022 AbstractIn this article, we investigate perfect fluid spacetimes equipped with concircular vector field. At first, in a perfect fluid spacetime admitting concircular vector field, we prove that the velocity vector field annihilates the conformal curvature tensor.
Krishnendu De +4 more
openaire +4 more sources
Homothetic perfect fluid spacetimes [PDF]
Classical and Quantum Gravity, 1997 A brief summary of results on homotheties in General Relativity is given, including general information about space-times admitting an r-parameter group of homothetic transformations for r>2, as well as some specific results on perfect fluids. Attention is then focussed on inhomogeneous models, in particular on those with a homothetic group $H_4 ...
Carot, J., Sintes, A. M.
openaire +3 more sources
Results in Physics, 2021 Static perfect fluid spaces are of great interest in metric theories of gravitation, they being used in building realistic models of some compact objects, like neutron stars and white dwarfs.
Sharief Deshmukh +2 more
doaj +1 more source
Gravitational collapse of perfect fluid [PDF]
Physics Letters A, 1999 The spherical gravitational collapse of a compact packet consisting of perfect fluid is studied. The spacetime outside the fluid packet is described by the out-going Vaidya radiation fluid. It is found that when the collapse has continuous self-similarity the formation of black holes always starts with zero mass, and when the collapse has no self ...
da Rocha, J. F. Villas +2 more
openaire +2 more sources
Conformally Flat Pseudoprojective Symmetric Spacetimes in fR,G Gravity
Advances in Mathematical Physics, 2022 Sufficient conditions on a pseudoprojective symmetric spacetime PPSn whose Ricci tensor is of Codazzi type to be either a perfect fluid or Einstein spacetime are given.
Uday Chand De +3 more
doaj +1 more source
Kerr–Newman-AdS black hole surrounded by perfect fluid matter in Rastall gravity
European Physical Journal C: Particles and Fields, 2018 The Rastall gravity is the modified Einstein general relativity, in which the energy-momentum conservation law is generalized to $$T^{\mu \nu }_{~~;\mu }=\lambda R^{,\nu }$$ T;μμν=λR,ν .
Zhaoyi Xu +3 more
doaj +1 more source
Generating perfect fluid spheres in general relativity [PDF]
, 2005 Ever since Karl Schwarzschild's 1916 discovery of the spacetime geometry describing the interior of a particular idealized general relativistic star -- a static spherically symmetric blob of fluid with position-independent density -- the general ...
H. Bondi +5 more
core +1 more source
Solution generating theorems for perfect fluid spheres [PDF]
, 2006 The first static spherically symmetric perfect fluid solution with constant density was found by Schwarzschild in 1918. Generically, perfect fluid spheres are interesting because they are first approximations to any attempt at building a realistic model ...
Bender C M +13 more
core +3 more sources
Solution Generating with Perfect Fluids [PDF]
General Relativity and Gravitation, 1997 We apply a technique, due to Stephani, for generating solutions of the Einstein-perfect fluid equations. This technique is similar to the vacuum solution generating techniques of Ehlers, Harrison, Geroch and others. We start with a ``seed'' solution of the Einstein-perfect fluid equations with a Killing vector.
Garfinkle, David +2 more
openaire +2 more sources