Axially Symmetric Bianchi Type-I Bulk-Viscous Cosmological Models with Time-Dependent 𝛬 and 𝑞

Journal of astrophysics and astronomy

Nawsad Ali1¹ 

[1] Department of Mathematics, Gauhati University, Guwahati 781 014, India.$$

关键词: Bianchi space-time;    bulk viscosity;    variable cosmological term and deceleration parameter.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

The present study deals with spatially homogeneous and anisotropic axially symmetric Bianchi type-I cosmological model with time variable cosmological term 𝛬 in the presence of bulk viscous fluid. The Einstein’s field equations are solved explicitly by time varying deceleration parameter 𝑞. Consequences of the four cases of phenomenological decay of𝛬 have been discussed which are consistent with observations. Physical and kinematical parameters of the models are discussed.

【 授权许可】

Unknown