Forecast: Euclid-like and SKA-like BAO surveys, combined with Gaussian-process regression, could measure H0 to about 1% precision and discriminate between Planck and Riess values at roughly 5 sigma.
A measurement of the Hubble constant using galaxy redshift surveys
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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.
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astro-ph.CO 1years
2019 1verdicts
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The Hubble constant tension with next-generation galaxy surveys
Forecast: Euclid-like and SKA-like BAO surveys, combined with Gaussian-process regression, could measure H0 to about 1% precision and discriminate between Planck and Riess values at roughly 5 sigma.