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Inhomogeneous imperfect fluid spherical models without Big-Bang singularity

Naresh Dadhich
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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 the weak and strong energy conditions. For large $t$ 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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Naresh Dadhich. 1997-05-14. Inhomogeneous imperfect fluid spherical models without Big-Bang singularity. https://doi.org/10.1007/bf02709325

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