English

Two Fluid Scenario in Bianchi Type-I Universe

General Relativity and Quantum Cosmology 2021-08-03 v2

Abstract

In this paper, we study a Bianchi type -I model of universe filled with barotropic and dark energy(DE) type fluids. The present values of cosmological parameters such as Hubble constant H0H_0, barotropic, DE and anisotropy energy parameters (Ωm)0(\Omega_{m})_0, (Ωde)0(\Omega_{de})_0 and (Ωσ)0(\Omega_{\sigma})_0 and Equation of State(EoS) parameter for DE (ωde\omega_{de}) are statistically estimated in two ways by taking 38 point data set of Hubble parameter H(z) and 581 point data set of distance modulus of supernovae in the range 0z1.4140\leq z \leq 1.414. It is found that the results agree with the Planck result [P.A.R. Ade, et al., Astron. Astrophys. 594 A14 (2016)] and more latest result obtained by Amirhashchi and Amirhashchi [H. Amirhashchi and S. Amirhashchi, arXiv:1811.05400v4 (2019)]. Various physical properties such as age of the universe, deceleration parameter etc have also been investigated.

Keywords

Cite

@article{arxiv.1907.11930,
  title  = {Two Fluid Scenario in Bianchi Type-I Universe},
  author = {G. K. Goswami and Meena Mishra and Anil Kumar Yadav and Anirudh Pradhan},
  journal= {arXiv preprint arXiv:1907.11930},
  year   = {2021}
}

Comments

10 pages, 8 figures

R2 v1 2026-06-23T10:32:42.912Z