BIANCHI TYPE V MAGNETIZED STRING DUST BULK VISCOUS FLUID COSMOLOGICAL MODELS WITH VARIABLE DECELERATION PARAMETER
By
Abhay Singh1, Shilpa Garg2, Bhawna Agrawal3, Sanjeet Kumar4
1Department of Mathematics, SORT, People's University, Bhopal, Madhya Pradesh, India-462037
2,3Department of Mathematics, Rabindranath Tagore University, Bhopal, Madhya Pradesh, India-464993
4Department of Mathematics Lakshmi Narain College of Technology & Science, Bhopal, Madhya Pradesh India-462021
Email: abhaysingh5784@gmail.com,shilpagargmathematics@gmail.com,
bhawnakhushiagrawal@gmail.com,sanjeetkumarmath@gmail.com
(Received: January 30, 2022; In format: February 11, 2023; Revised : August 16, 2023; Accepted : September 05, 2023)
DOI: https://doi.org/10.58250/jnanabha.2023.53210
Abstract
We have investigated Bianchi type ∨ viscous fluid cosmological models with string dust universe in general relativity. Exact solution of Einstein eld equations have been obtained by choosing deceleration parameter is function of cosmic time. Solutions for exponential and polynomial form are obtained. Some geometrical and physical aspects of models are also discussed.
2020 Mathematical Sciences Classification: 83C10, 83C20, 83E30.
Keywords and Phrases: Deceleration parameter, Bianchi type- ∨ , Cosmological term ∧.