Mimicking the ACDM universe through inhomogeneous space-time

被引：2
|
作者：
Bhattacharya, Subhra [1 ]
机构：
[1] Presidency Univ, Dept Math, 86-1 Coll St, Kolkata 700073, West Bengal, India
来源：
ANNALS OF PHYSICS | 2023年 / 450卷
关键词：
ACDM; Dark matter; Dark energy; Inhomogeneous space-time; Curvature; BARYON ACOUSTIC-OSCILLATIONS; LUMINOUS RED GALAXIES; STATEFINDER; CONSTRAINTS;
D O I：
10.1016/j.aop.2023.169238
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Starting from an inhomogeneous space-time model of the uni-verse we could recreate a scenario of recent time accelerating universe dominated by Dark Energy type of fluid. The back-ground matter component of such a universe was considered to be made up of a combination of an anisotropic fluid, a barotropic fluid and the pressure less cold dark matter. It was found that inhomogeneity exhibits itself as the curvature term in such a universe. We corroborated our model with recent supernova Ia-JLA data together with H0 data and BAO data. Cosmographic analysis of the dynamical variables further show that the model can mimic the ACDM cosmology very closely.(c) 2023 Elsevier Inc. All rights reserved.
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页数：10
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