An accurate determination of the Hubble constant from Baryon Acoustic Oscillation datasets
Abstract
Even though the Hubble constant cannot be significantly determined by the low-redshift Baryon Acoustic Oscillation (BAO) data alone, it can be tightly constrained once the high-redshift BAO data are combined. Combining BAO data from 6dFGS, BOSS DR11 clustering of galaxies, WiggleZ and z=2.34 from BOSS DR11 quasar Lyman-α forest lines, we get H0=68.17+1.55-1.56 km s-1 Mpc-1. In addition, adopting the 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, we obtain H0=68.111.69 km s-1 Mpc-1. Finally, combining all of the BAO datasets, we conclude H0=68.11 0.86 km s-1 Mpc-1, a 1.3% determination.
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