Model-independent determination on H₀ using the latest H(z) data

2016/10/01 by Wang, Deng, Meng, Xin-He
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc)

paper · doi:10.48550/arxiv.1610.01202

Abstract

We perform the improved constraints on the Hubble constant H₀ by using the model-independent method, Gaussian Processes. Utilizing the latest 36 H(z) measurements, we obtain H₀=69.21±3.72 km s^-1 Mpc^-1, which is consistent with the Planck 2015 and Riess et al. 2016 analysis at 1σ confidence level, and reduces the uncertainty from 6.5% (Busti et al. 2014) to 5.4%. Different from the results of Busti et al. 2014 by only using 19 H(z) measurements, our reconstruction results of H(z) and the derived values of H₀ are independent of the choice of covariance functions.

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