论文标题
使用低红移,非CMB数据来限制哈勃常数和其他宇宙学参数
Using lower-redshift, non-CMB, data to constrain the Hubble constant and other cosmological parameters
论文作者
论文摘要
We use updated Hubble parameter and baryon acoustic oscillation data, as well as other lower-redshift Type Ia supernova, Mg II reverberation-measured quasar, quasar angular size, H II starburst galaxy, and Amati-correlated gamma-ray burst data, to jointly constrain cosmological parameters in six cosmological models. The joint analysis provides model-independent determinations of the Hubble constant, $H_0=69.7\pm1.2$ $\rm{km \ s^{-1} \ Mpc^{-1}}$, and the current non-relativistic matter density parameter, $Ω_{m0}=0.295\pm0.017$.这些误差线比来自Planck TT,TE,EE+Lowe+Lensing Cosmic微波背景各向异性数据的Flat $λ$ CDM模型中的相应误差线大2.2和2.3。根据偏差信息标准(DIC),最喜欢扁平的$λ$ CDM模型,但是轻度的暗能动力学和少量空间曲率并未排除。
We use updated Hubble parameter and baryon acoustic oscillation data, as well as other lower-redshift Type Ia supernova, Mg II reverberation-measured quasar, quasar angular size, H II starburst galaxy, and Amati-correlated gamma-ray burst data, to jointly constrain cosmological parameters in six cosmological models. The joint analysis provides model-independent determinations of the Hubble constant, $H_0=69.7\pm1.2$ $\rm{km \ s^{-1} \ Mpc^{-1}}$, and the current non-relativistic matter density parameter, $Ω_{m0}=0.295\pm0.017$. These error bars are factors of 2.2 and 2.3 larger than the corresponding error bars in the flat $Λ$CDM model from Planck TT,TE,EE+lowE+lensing cosmic microwave background anisotropy data. Based on the deviance information criterion (DIC), the flat $Λ$CDM model is most favored but mild dark energy dynamics and a little spatial curvature are not ruled out.