paper

The Hubble constant from galaxy cluster scaling-relation and SNe Ia observations: a consistency test

arXiv:2203.07223 · doi:10.1140/epjc/s10052-023-11424-y

Abstract

In this paper, we propose a self-consistent test for a Hubble constant estimate using galaxy cluster and type Ia supernovae (SNe Ia) observations. The approach consists, in a first step, of obtaining the observational value of the galaxy cluster scaling-relation by combining the X-Ray and SZ observations of galaxy clusters at low redshifts () from the first {\it Planck mission} all-sky data set (), along with SNe Ia observations and making use of the cosmic distance duality relation validity. Then, by considering a flat CDM model for , the constant from the first step and the Planck prior on parameter, we obtain by using the galaxy cluster data with . As a result, we obtain km/s/Mpc, which represents accuracy measurement on the Hubble constant.. We also compare our method with that one where the parameter is obtained from hydrodynamical simulations of massive galaxy clusters.

arXiv comment8 pages, 5 figures. Version accepted by The European Journal of Physics C

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