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arXiv · 1411.5522

The Cosmological Effect of CMB/BAO Measurements

Yi Zhang
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Abstract

In this paper, the CMB/BAO measurements which cover the 13 redshift data in the regime $0.106 \leq z \leq 2.34$ are given out. The CMB/BAO samples are based on the BAO distance ratios $r_{s}(z_d)/D_{V}(z)$ and the CMB acoustic scales $l_{A}$. It could give out the accelerating behaviors of the $Λ$CDM, $w$CDM and o$Λ$CDM models. As the direction of the degeneracy of $Ω_{m0}-w$ and $Ω_{m0}-Ω_{k0}$ are different for the CMB/BAO and BAO data, the CMB/BAO data show ability of breaking parameter degeneracy. Our tightest constraining results is from the BAO+Planck/BAO+$Ω_{b}h^2$+$Ω_{m}h^2$ data which has $Ω_{m0}$ tension, but doesn't have $H_{0}$ tension with the Planck result. The extending parameters $w$ and $Ω_{k0}$ could alleviate the $Ω_{m0}$ tensions slightly.

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Yi Zhang. 2014-11-20. The Cosmological Effect of CMB/BAO Measurements. https://arxiv.org/abs/1411.5522

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