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arXiv · 2103.02439

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

G. K. Goswami·Anil Kumar Yadav·B. Mishra·S. K. Tripathy
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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 $H_{0} = 69.39 \pm 1.54~km~s^{-1}Mpc^{-1}$, $70.016 \pm 1.65~km~s^{-1}Mpc^{-1}$ and $69.36 \pm 1.42~km~s^{-1}Mpc^{-1}$ 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.

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G. K. Goswami, Anil Kumar Yadav, B. Mishra, S. K. Tripathy. 2021-02-22. Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time. https://doi.org/10.1002/prop.202100007

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