# LRS Bianchi Type-V Viscous Fluid Universe With a Time Dependent Cosmological Term $\Lambda$

## TL;DR

This paper investigates LRS Bianchi type-V cosmological models with a viscous fluid and a time-dependent cosmological constant, showing that the cosmological term decreases over time, aligning with supernova observations.

## Contribution

It introduces a new class of models with a bulk viscosity coefficient as a power function of density and analyzes their physical and kinematic properties.

## Key findings

- The cosmological term $\\Lambda(t)$ decreases over time.
- Models are consistent with supernova observations.
- Physical and kinematic features are thoroughly explored.

## Abstract

An LRS Bianchi type-V cosmological models representing a viscous fluid distribution with a time dependent cosmological term $\Lambda$ is investigated. To get a determinate solution, the viscosity coefficient of bulk viscous fluid is assumed to be a power function of mass density. It turns out that the cosmological term $\Lambda(t)$ is a decreasing function of time, which is consistent with recent observations of type Ia supernovae. Various physical and kinematic features of these models have also been explored.