Median statistics and the Hubble constant

TL;DR

This paper applies median statistics to a large compilation of Hubble constant measurements, providing updated constraints that are consistent with previous findings but with reduced statistical errors.

Contribution

It extends prior median statistical analysis of $H_0$ using a larger dataset, refining the constraints on the Hubble constant.

Findings

$H_0=68 \, ext{km/s/Mpc}$ with 95% confidence interval

Results are consistent with previous studies by Gott et al.

Statistical errors are reduced compared to earlier analyses.

Abstract

Following Gott et al. (2001), we use Huchra's final compilation of 553 measurements of the Hubble constant ($H_0$) to determine median statistical constraints on $H_0$. We find $H_0=68 \pm 5.5$ (or $\pm 1$) $\kmsmpc$, where the errors are the 95% statistical and systematic (or statistical) errors. With about two-third more measurements, these results are close to what Gott et al. found a decade ago, with smaller statistical errors and similar systematic errors.