Two-fluid scenario in Bianchi type-I universe

摘要

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 H-0, DE and anisotropy energy parameters (Omega(m)) 0, (Omega(de)) 0 and (Omega(sigma)) 0 and Equation of State (EoS) parameter for DE (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 0 <= z <= 1.414. It is found that the results agree with the Planck result [Planck Collab. (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]. Various physical properties such as age of the universe, deceleration parameter, etc. have also been investigated.