On Kantowski-Sachs Viscous Fluid Model in Bimetric Relativity

• 作者: B. Behera R. C. Sahu S. P. Misra
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 数学
• 关键词: Bimetric THEORY VISCOUS FLUID Kantowski-Sachs
• 年，卷（期）: 2015,（1）
• 页码范围: 47-55
• 页数: 9页
• 分类号: O1

摘要

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.