Model-independent determination on H_0 using the latest cosmic chronometer data  

作　　者：Deng Wang Xin He Meng 

机构地区：[1]Theoretical Physics Division, Chern Institute of Mathematics, Nankai University [2]Department of Physics, Nankai University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2017年第11期1-10,共10页中国科学：物理学、力学、天文学（英文版）

摘　　要：We perform the updated constraints on the Hubble constant H_0 by using the model-independent method, Gaussian processes.Utilizing the latest 30 cosmic chronometer measurements, we obtain H_0= 67.38 ± 4.72 km s^(-1)Mpc^(-1), which is consistent with the Planck 2015 and Riess et al. analysis at 1σ confidence level. Different from the results of Busti et al. by only using 19 H(z) measurements, our reconstruction results of H(z) and the derived values of H_0 are insensitive to the concrete choice of covariance functions of Matern family.We perform the updated constraints on the Hubble constant H_0 by using the model-independent method, Gaussian processes.Utilizing the latest 30 cosmic chronometer measurements, we obtain H_0= 67.38 ± 4.72 km s^（-1）Mpc^（-1）, which is consistent with the Planck 2015 and Riess et al. analysis at 1σ confidence level. Different from the results of Busti et al. by only using 19 H（z） measurements, our reconstruction results of H（z） and the derived values of H_0 are insensitive to the concrete choice of covariance functions of Matern family.

关 键 词：Hubble constant cosmic chronometers model-independent method 

分 类 号：P159[天文地球—天文学]