English

Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time

General Relativity and Quantum Cosmology 2021-06-10 v1

Abstract

In this paper, we have investigated a bulk viscous anisotropic Universe and constrained its model parameters with recent H(z)H(z) and Pantheon compilation data. Using cosmic chronometric technique, we estimate the present value of Hubble's constant as H0=69.39±1.54 km s1Mpc1H_{0} = 69.39 \pm 1.54~km~s^{-1}Mpc^{-1}, 70.016±1.65 km s1Mpc170.016 \pm 1.65~km~s^{-1}Mpc^{-1} and 69.36±1.42 km s1Mpc169.36 \pm 1.42~km~s^{-1}Mpc^{-1} by bounding our derived model with recent H(z)H(z) data, Pantheon and joint H(z)H(z) and Pantheon data respectively. The present age of the Universe is specified as t0=0.9796H0113.79t_0= 0.9796H_0^{-1}\sim 13.79 Gyrs. The model favours a transitioning Universe with the transition red-shift as zt=0.73z_{t} = 0.73. We have reconstructed the jerk parameter using the observational data sets. From the analysis of the jerk parameter, it is observed that, our derived model shows a marginal departure from the concordance Λ\LambdaCDM model.

Keywords

Cite

@article{arxiv.2103.02439,
  title  = {Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time},
  author = {G. K. Goswami and Anil Kumar Yadav and B. Mishra and S. K. Tripathy},
  journal= {arXiv preprint arXiv:2103.02439},
  year   = {2021}
}

Comments

Accepted Version of Fortschritte der Physik, 12 pages, 9 figures