Abstract
The dynamics of slowly rotating magneto-viscous 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, in the course of presentation of several new analytic solutions. Four different cases are taken up in which the nature and role of the metric rotation Ω(r, t) as well as that of the matter rotationω(r,t) 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 found out. Most of the rotating models obtained here come out to be expanding ones as well which may be taken as good examples of real astrophysical situations.
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Maniharsingh, K. Rotational perturbations of magneto-viscous fluid universes coupled with zero-mass scalar field. Astrophys Space Sci 180, 253–271 (1991). https://doi.org/10.1007/BF00648181
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DOI: https://doi.org/10.1007/BF00648181