Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...348...26c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 348, Jan. 1, 1990, p. 26-32.
Astronomy and Astrophysics
Astrophysics
7
Astronomical Models, Cosmology, Gravitational Fields, Relic Radiation, Two Fluid Models, Physical Properties, Radiation Distribution, Universe
Scientific paper
Exact solutions of the spatially homogeneous anisotropic Bianchi VI(0) field equations are presented in which the source of the gravitational field consists of two comoving perfect fluids: one fluid is a radiation field, modeling the cosmic microwave background, and the second is a matter field, modeling the material content of the universe. Models are found in which the matter field satisfies a 'gamma law equation of state', in which the two fluids are noninteracting (i.e., the energies of the radiation and matter fields are conserved separately), and in which an electromagnetic field is also included. The physical properties of the various models are discussed; in particular, models are found for which all physical quantities are well behaved and have a suitable behavior (at least for some period of the universe).
Coley Alan A.
Dunn Ken
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