2021
DOI: 10.48550/arxiv.2102.12419
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Cosmic variance of $H_0$ in light of forthcoming high-redshift surveys

Giuseppe Fanizza,
Bartolomeo Fiorini,
Giovanni Marozzi

Abstract: Forthcoming surveys will extend the understanding of cosmological large scale structures up to unprecedented redshift. According to this perspective, we present a fully relativistic framework to evaluate the impact of stochastic inhomogeneities on the determination of the Hubble constant. To this aim, we work within linear perturbation theory and relate the fluctuations of the luminosity distance-redshift relation, in the Cosmic Concordance model, to the intrinsic uncertainty associated to the measurement of H… Show more

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Cited by 8 publications
(9 citation statements)
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“…Let us finally remark that the structure of Eq. (C.9) agrees with the one found in [40], where the C 's of the distance-redshift relation for scalar perturbations have been studied. At linear level, indeed, they are supposed to be equal to the ones of the convergence.…”
Section: Scalar Power Spectrasupporting
confidence: 87%
“…Let us finally remark that the structure of Eq. (C.9) agrees with the one found in [40], where the C 's of the distance-redshift relation for scalar perturbations have been studied. At linear level, indeed, they are supposed to be equal to the ones of the convergence.…”
Section: Scalar Power Spectrasupporting
confidence: 87%
“…Stochastic inhomogeneities are expected to lead to an intrinsic uncertainty in the values of cosmological parameters obtained with such high redshift surveys. The corresponding cosmic variance in the context of Euclid for the measurement of H 0 has been shown to be limited to about 0.1% [1407]. Thus Euclid and other deep surveys (z 0.15) will provide an estimation of the H 0 which will be more precise than the low redshift surveys (z 0.15).…”
Section: Table VII Some Existing and Upcoming Gw Experiments/observat...mentioning
confidence: 98%
“…(4.3) with the analysis of the expected Hubble-Lemaître diagram from Superluminous Supernovae [60] for forthcoming Large-Scale Structure surveys at higher redshift (up to z = 4). Indeed, it has been shown in [61] that this analysis could provide a (model dependent) estimation of H 0 at a precision level of ∼ 0.1%.…”
Section: A Smoking Gun For the Shear Viscosity?mentioning
confidence: 92%