Advances in Astrophysics

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

Download PDF (317.3 KB) PP. 62 - 71 Pub. Date: May 1, 2016

DOI: 10.22606/adap.2016.11006

Author(s)

V.U.M.Rao^*
Department of Applied Mathematics, Andhra University, Visakhapatnam, India
G. Suryanarayana
Department of Applied Mathematics, Andhra University, Visakhapatnam, India
Y.Aditya
Department of Applied Mathematics, Andhra University, Visakhapatnam, India

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.

Keywords

Kantowski-Sachs metric, Brans-Dicke theory, Two-fluids, Dark energy, EoS Parameter

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