4 years ago
Clarifying the Hubble constant tension with a Bayesian hierarchical model of the local distance ladder.
Niccolò Dalmasso, Daniel J. Mortlock, Stephen M. Feeney
Estimates of the Hubble constant, $H_0$, from the distance ladder and the cosmic microwave background (CMB) differ at the $\sim$3-$\sigma$ level, indicating a potential issue with the standard $\Lambda$CDM cosmology. Interpreting this tension correctly requires a model comparison calculation depending on not only the traditional `$n$-$\sigma