An accurate determination of the Hubble constant from baryon acoustic oscillation datasets  

作　　者：CHENG Cheng HUANG QingGuo 

机构地区：[1]State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [2]University of the Chinese Academy of Sciences

出　　处：《Science China(Physics,Mechanics & Astronomy)》2015年第9期103-108,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the Project of Knowledge Innovation Program of Chinese Academy of Science,National Natural Science Foundation of China(Grant Nos.11322545 and 11335012)

摘　　要：Even though the Hubble constant cannot be significantly determined just by the low-redshift Baryon Acoustic Oscillation(BAO)data, it can be tightly constrained once the high-redshift BAO data are combined. We combined BAO data from 6d FGS, BOSS DR11 clustering of galaxies, Wiggle Z and z = 2.34 from BOSS DR11 quasar Lyman-α forest lines to get H0= 68.17+1.55-1.56 km s-1Mpc-1. In addition, we adopted the simultaneous measurements of H(z) and DA(z) from the two-dimensional two-point correlation function from BOSS DR9 CMASS sample and two-dimensional matter power spectrum from SDSS DR7 sample to obtain H0=(68.11±1.69) km s-1Mpc-1. Finally, combining all of the BAO datasets, we conclude that H0=(68.11±0.86) km s-1Mpc-1, a1.3% determination.Even though the Hubble constant cannot be significantly determined just by the low-redshift Baryon Acoustic Oscillation（BAO）data, it can be tightly constrained once the high-redshift BAO data are combined. We combined BAO data from 6d FGS, BOSS DR11 clustering of galaxies, Wiggle Z and z = 2.34 from BOSS DR11 quasar Lyman-α forest lines to get H0= 68.17＋1.55-1.56 km s-1Mpc-1. In addition, we adopted the simultaneous measurements of H（z） and DA（z） from the two-dimensional two-point correlation function from BOSS DR9 CMASS sample and two-dimensional matter power spectrum from SDSS DR7 sample to obtain H0=（68.11±1.69） km s-1Mpc-1. Finally, combining all of the BAO datasets, we conclude that H0=（68.11±0.86） km s-1Mpc-1, a1.3% determination.

关 键 词：Hubble constant baryon acoustic oscillation large-scale structure 

分 类 号：P126[天文地球—天体测量]