TITLE:
On Kantowski-Sachs Viscous Fluid Model in Bimetric Relativity
AUTHORS:
R. C. Sahu, S. P. Misra, B. Behera
KEYWORDS:
Bimetric Theory, Viscous Fluid, Kantowski-Sachs
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.5 No.1,
March
26,
2015
ABSTRACT: Kantowski-Sachs
plane symmetric models are investigated in bimetric theory of gravitation
proposed by Rosen [1]
08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F005200650066003400310035003100330038003900340034000000
in the context of bulk viscous fluid. Taking conservation law and the
equation of state, two different models of the universe are obtained. It is
observed that Kantowski-Sachs vacuum model obtained in first case and bulk
viscous fluid model obtained in second case. It is also observed that the bulk
viscous cosmological model always represents an accelerated universe and
consistent with the recent observations of type-1a supernovae. Some physical
and geometrical features of the viscous fluid model are studied.