# A measurement of the Hubble constant using galaxy redshift surveys

## TL;DR

This paper measures the Hubble constant using galaxy redshift surveys and BAO data, finding consistency with Planck and local measurements, and forecasts future measurement precision.

## Contribution

It provides a new $H_0$ measurement from BAO data within a flat $
mf extLambda$CDM model and assesses future BAO data's potential to constrain $H_0$.

## Key findings

- Current BAO-based $H_0$ measurement aligns with Planck and local results.
- Future BAO surveys could achieve $H_0$ precision comparable to local methods.
- The analysis confirms the consistency of different $H_0$ measurements within uncertainties.

## Abstract

We perform a measurement of the Hubble constant, $H_0$, using the latest baryonic acoustic oscillations (BAO) measurements from galaxy surveys of 6dFGS, SDSS DR7 Main Galaxy Sample, BOSS DR12 sample, and eBOSS DR14 quasar sample, in the framework of a flat $\Lambda$CDM model. Based on the Kullback-Leibler (KL) divergence, we examine the consistency of $H_0$ values derived from various data sets. We find that our measurement is consistent with that derived from Planck and with the local measurement of $H_0$ using the Cepheids and type Ia supernovae. We perform forecasts on $H_0$ from future BAO measurements, and find that the uncertainty of $H_0$ determined by future BAO data alone, including complete eBOSS, DESI and Euclid-like, is comparable with that from local measurements.