Physics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.180..253m&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 180, no. 2, June 1991, p. 253-271.
Physics
6
Field Theory (Physics), Rotating Fluids, Stellar Cores, Universe, Viscous Fluids, Angular Velocity, Astronomical Models, Stellar Gravitation, Stellar Rotation
Scientific paper
The dynamics of slowly rotating magnetoviscous fluid universe coupled with zero-mass scalar field is investigated, and the rotational perturbations of such models are studied in order to substantiate the possibility that the universe is endowed with slow rotation. Four different cases are taken up in which the nature and role of the metric rotation as well as that of the matter rotation are discussed. Except for the case of 'perfect drag', the scalar field is found to have a damping effect on the rotational motion. This damping effect is seen to be roughly analogous to the viscosity. The periods of physical validity of some of the models are also determined. Most of the rotating models obtained here turn out to be expanding ones as well which may be taken as good examples of real astrophysical situations.
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