Abstract
New analytic solutions for rotational perturbations of the Robertson-Walker metric are found in order to incorporate the possibility of a rotating viscous universe. The field equations impose restrictions on the matter rotationω(r, t), and some of the solutions for Ω(r, t) which is related to the local dragging of inertial frames are studied. In all the cases the rotational velocity is found to decay with increase of time. Geodesics of the metric are studied to reveal the intrinsic nature of rotation and to elucidate the role of Ω.
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Singh, K.M., Bhamra, K.S. Slow rotation of compressible viscous fluid in cosmological universe. Pramana - J. Phys. 26, 117–127 (1986). https://doi.org/10.1007/BF02847631
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DOI: https://doi.org/10.1007/BF02847631