Inhomogeneous imperfect fluid spherical models without big-bang singularity |
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Authors: | Naresh Dadhich |
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Affiliation: | (1) Inter-University Centre for Astronomy & Astrophysics, Ganeshkhind, Post Bag 4, 411 007 Pune, India |
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Abstract: | So far all known singularity-free cosmological models are cylindrically symmetric. Here we present a new family of spherically symmetric non-singular models filled with imperfect fluid and radial heat flow, and satisfying all the energy conditions. For larget anisotropy in pressure and heat flux tend to vanish leading to a perfect fluid. There is a free function of time in the model, which can be suitably chosen for non-singular behaviour and there exist multiplicity of such choices. |
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Keywords: | Inhomogeneous cosmology singularity-free models |
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