Measuring Hubble constant in an anisotropic extension of ΛCDM model

被引：8
作者：
Yadav, Vikrant [1 ]
机构：
[1] Raffles Univ, Sch Basic & Appl Sci, Neemrana 301705, Rajasthan, India
来源：
PHYSICS OF THE DARK UNIVERSE | 2023年 / 42卷
关键词：
Hubble constant; Anisotropic model; LUMINOUS RED GALAXIES; TEMPERATURE; REDSHIFT; UNIVERSE;
D O I：
10.1016/j.dark.2023.101365
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cosmic Microwave Background (CMB) independent approaches are frequently used in the literature to provide estimates of Hubble constant (H-0). In this work, we report CMB independent constraints on H-0 in an anisotropic extension of..CDM model using the Big Bang Nucleosynthesis (BBN), Baryonic Acoustic Oscillations (BAOs), Cosmic Chronometer (CC), and Pantheon+ (PP) compilation of Type Ia supernovae and SH0ES Cepheid host distance anchors data. In the anisotropic model, we find H-0 = 70.1(-1.5)(+1.2) (72.67 +/- 0.85) km s(-1) Mpc(-1) both with 68% CL from BAO+BBN+CC+PP (BAO+BBN+CC+PPSH0ES) data. The analyses of the anisotropic model with the two combinations of datasets reveal that anisotropy is positively correlated with H-0, and an anisotropy of the order 10(-14) in the anisotropic model reduces the H-0 tension by similar to 2 sigma.
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页数：7
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