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

Abstract

In this paper, we have investigated a bulk viscous anisotropic Universe and constrained its model parameters with recent $H(z)$ and Pantheon compilation data. Using cosmic chronometric technique, we estimate the present value of Hubble's constant as $H_0=69.39\pm 1.54km{s}^{-1}Mp{c}^{-1}$, $70.016\pm 1.65km{s}^{-1}Mp{c}^{-1}$ and $69.36\pm 1.42km{s}^{-1}Mp{c}^{-1}$ by bounding our derived model with recent $H(z)$ data, Pantheon and joint $H(z)$ and Pantheon data respectively. The present age of the Universe is specified as $t_0=0.9796H_0^{-1}\sim 13.79$ Gyrs. The model favours a transitioning Universe with the transition red-shift as $z_t=0.73$. 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 $\Lambda$CDM model.

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

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• Cosmological Model with Cosmic transit behaviour in Brans-Dicke Theory
• Evolution of Generalized Brans-Dicke parameter within a Superbounce scenario
• Accelerating Universe with binary mixture of bulk viscous fluid and dark energy
• Dynamics of quasi de Sitter and linear combination of exponential models in extended gravity