Kantowski-Sachs bulk viscous string cosmological model in f(R) theory of gravity

The present work deals with a spatially homogeneous and anisotropic Kantowski-Sachs space-time filled with bulk viscous fluid, containing one-dimensional cosmic strings. To obtain a deterministic solution of the field equations, we used the assumption of shear scalar is proportional to expansion sca...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-10, Vol.1344 (1), p.12041
Main Authors: Prasanthi, U.Y. Divya, Aditya, Y.
Format: Article
Language:English
Subjects:
Astronomical models
Cosmology
Graphical representations
Gravitation theory
Parameter modification
Physics
Viscous fluids
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Summary:The present work deals with a spatially homogeneous and anisotropic Kantowski-Sachs space-time filled with bulk viscous fluid, containing one-dimensional cosmic strings. To obtain a deterministic solution of the field equations, we used the assumption of shear scalar is proportional to expansion scalar of the model. We have investigated geometric and kinematic properties of our bulk viscous string model and discussed the role of bulk viscosity in the evolution of Kantowski-Sachs universe within the framework of f(R) modified theory gravity. A detailed physical discussion of the dynamical parameters is presented through a graphical representation.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1344/1/012041