Bianchi Type I Magnetofluid Cosmological Models with Variable Cosmological Constant Revisited

TL;DR

This paper investigates the effects of magnetic fields and bulk viscosity on anisotropic Bianchi type I cosmological models with a variable cosmological constant, analyzing physical and geometrical properties under different conditions.

Contribution

It revisits Bianchi type I models incorporating magnetic fields and bulk viscosity with a variable cosmological constant, exploring their physical and geometrical implications.

Findings

Magnetic fields influence anisotropic expansion dynamics.

Bulk viscosity affects the evolution of the cosmological model.

Presence or absence of magnetic fields alters geometrical properties.

Abstract

The behaviour of magnetic field in anisotropic Bianchi type I cosmological model for bulk viscous distribution is investigated. The distribution consists of an electrically neutral viscous fluid with an infinite electrical conductivity. It is assumed that the component $\sigma^{1}_{1}$ of shear tensor $\sigma^{j}_{i}$ is proportional to expansion ($\theta$) and the coefficient of bulk viscosity is assumed to be a power function of mass density. Some physical and geometrical aspects of the models are also discussed in presence and also in absence of the magnetic field.