The Cosmological Effect of CMB/BAO Measurements

Abstract

In this paper, the CMB/BAO measurements which cover the 13 redshift data in the regime $0.106\le z\le 2.34$ 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 $\Lambda$CDM, $w$CDM and o$\Lambda$CDM models. As the direction of the degeneracy of ${\Omega }_{m0}-w$ and ${\Omega }_{m0}-{\Omega }_{k0}$ 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+${\Omega }_b{h}^2$+${\Omega }_m{h}^2$ data which has ${\Omega }_{m0}$ tension, but doesn't have $H_0$ tension with the Planck result. The extending parameters $w$ and ${\Omega }_{k0}$ could alleviate the ${\Omega }_{m0}$ tensions slightly.

16 pages, 3 figures, 3 tables

References in corpus (2)

• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• Measuring the Baryon Acoustic Oscillation scale using the SDSS and 2dFGRS