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arXiv · 2310.18711

A Hubble Constant Estimate from Galaxy Cluster and type Ia SNe Observations

L. R. Colaço·M. S. Ferreira·R. F. L. Holanda·J. E. Gonzalez·Rafael C. Nunes
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Abstract

In this work, we constrain the Hubble constant parameter, $H_0$, using a combination of the Pantheon sample and galaxy clusters (GC) measurements from minimal cosmological assumptions. Assuming the validity of the cosmic distance duality relation, an estimator is created for $H_0$ that only depends on simple geometrical distances, which is evaluated from Pantheon and a GC angular diameter distance sample afterward. The statistical and systematic errors in GC measurements are summed in quadrature in our analysis. We find $H_0 = 67.22 \pm 6.07$ ${\rm km \ s^{-1} Mpc^{-1}}$ in $1\sigma$ confidence level (C.L.). This measurement presents an error of around 9\%, showing that future and better GC measurements can shed light on the current Hubble tension

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L. R. Colaço, M. S. Ferreira, R. F. L. Holanda, J. E. Gonzalez, Rafael C. Nunes. 2023-10-28. A Hubble Constant Estimate from Galaxy Cluster and type Ia SNe Observations. https://arxiv.org/abs/2310.18711

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