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Title:
Radiation-like imperfect fluid cosmologies
Authors:
Coley, A. A.; Tupper, B. O. J.
Affiliation:
AA(Dalhousie University, Halifax, Canada), AB(New Brunswick, University, Fredericton, Canada)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 15, 1985, p. 418-421. (ApJ Homepage)
Publication Date:
01/1985
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Computational Astrophysics, Cosmology, Einstein Equations, Extraterrestrial Radiation, Viscous Fluids, Astronomical Models, Field Theory (Physics), Magnetohydrodynamics
DOI:
10.1086/162807
Bibliographic Code:
1985ApJ...288..418C

Abstract

Radiation-like viscous fluid solutions of the Einstein field equations are presented in which the geometrical part corresponds to the k = 0, R(t) = t exp 1/2 FRW model. It is shown that there are radial solutions, in particular, self-similar solutions, corresponding to the spacetime and which describe radiating imperfect fluids, that are valid everywhere and satisfy all necessary physical requirements. Such solutions are of importance in hydrodynamics, including viscous fluid motion, in astrophysics, and in cosmology.

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