2016•Advances in AstrophysicsOpen access

Kantowski-Sachs Two Fluid Radiating Cosmological Model in Brans-Dicke Theory of Gravitation

V. U. M. Rao, G. Suryanarayana, Yerramsetti Aditya

Abstract

Spatially homogeneous Kantowski-Sachs cosmological model filled with barotropic fluid and dark energy is obtained in a scalar tensor theory of gravitation proposed by Brans and Dicke (1961).We consider both cases when the dark energy is minimally coupled to barotropic fluid as well as directly interacts with it.In these two cases the EoS parameter of dark energy is in good agreement with the observational data.Also some important features of the models, thus obtained, have been discussed.

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Key concepts: Barotropic fluid, Brans–Dicke theory, Physics, Dark energy, Scalar–tensor theory, Gravitation, Scalar (mathematics), Homogeneous