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Title:
Imperfect fluid cosmologies with thermodynamics - Some exact solutions
Authors:
Coley, A. A.; Tupper, B. O. J.
Affiliation:
AA(Waterloo, University, Waterloo, Ontario, Canada), AB(New Brunswick, University, Fredericton, Canada)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 280, May 1, 1984, p. 26-33. (ApJ Homepage)
Publication Date:
05/1984
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Cosmology, Magnetohydrodynamics, Relativistic Theory, Field Theory (Physics), Radial Velocity, Viscous Flow
DOI:
10.1086/161964
Bibliographic Code:
1984ApJ...280...26C

Abstract

The field equations for a viscous magnetohydrodynamic fluid satisfying an appropriate set of thermodynamic relations are investigated. It is shown that zero-curvature Friedmann-Robertson-Walker models can be exact solutions of this system of equations. Two types of solution are discussed: one in which the spacelike component of the tilting velocity vector is axially directed and the other in which the spacelike component is radially directed. The solutions presented satisfy all the necessary conditions for physical acceptability.

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