In this paper, we have proposed a model of accelerating universe with binary mixture of bulk viscous fluid and dark energy (DE) and probed the model parameters: present values of Hubble’s constant H0, equation of state paper of DE ωde and density parameter of DE (Ωde)0 with recent observational H(z) data (OHD) as well as joint Pantheon compilation of SN Ia data and OHD. Using cosmic chronometric technique, we obtain H0 = 69.80 ± 1.64km s−1Mpc−1 and 70.0258 ± 1.72km s−1Mpc−1 by restricting our derived model with recent OHD and joint Pantheon compilation SN Ia data and OHD, respectively. The present age of the universe in derived model is estimated as t0 = 13.82 ± 0.33Gyr. Also, we observe that derived model represents a model of transitioning universe with transition redshift zt = 0.7286. We have constrained the present value of jerk parameter as j0 = 0.969 ± 0.0075 with joint OHD and Pantheon data. From this analysis, we observed that the model of the universe, presented in this paper, shows a marginal departure from ΛCDM model.

中文翻译：

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用体粘性流体和暗能量的二元混合物加速宇宙

在本文中，我们提出了体粘性流体和暗能量（DE）二元混合加速宇宙模型，并探讨了模型参数：哈勃常数的现值H0, DE 状态纸方程ω德和 DE 的密度参数(Ω德)0与最近的观察H(z)数据 (OHD) 以及 SN Ia 数据和 OHD 的联合万神殿汇编。使用宇宙计时技术，我们得到H0 = 69.80 ± 1.64公里-1计算机-1和70.0258 ± 1.72公里-1计算机-1通过分别用最近的 OHD 和联合 Pantheon 编译 SN Ia 数据和 OHD 限制我们的派生模型。衍生模型中宇宙的当前年龄估计为吨0 = 13.82 ± 0.33陀螺. 此外，我们观察到派生模型代表了具有过渡红移的过渡宇宙模型z吨 = 0.7286. 我们将 jerk 参数的现值约束为j0 = 0.969 ± 0.0075与联合 OHD 和 Pantheon 数据。从这一分析中，我们观察到本文提出的宇宙模型与Λ清洁发展机制模型。