The Local Perspective on the Hubble Tension: Local Structure Does Not Impact Measurement of the Hubble Constant

By William Kenworthy, D. Scolnic, A. Riess. Astrophysical Journal, 2019

137 citations recorded by the source corpus.

We use the largest sample to date of spectroscopic supernova (SN) Ia distances and redshifts to look for evidence in the Hubble diagram of large-scale outflows caused by local voids suggested to exist at z < 0.15. Our sample combines data from the Pantheon sample with the Foundation survey, and the most recent release of light curves from the Carnegie Supernova Project, to create a sample of 1295 SNe over a redshift range of 0.01 < z < 2.26. We make use of an inhomogeneous and isotropic Lemaitre–Tolman–Bondi metric to model a void in the SN Ia distance–redshift relation. We conclude that the SN luminosity distance–redshift relation is inconsistent at the 4–5σ confidence level with large local underdensities ( , where the density contrast δ = Δρ/ρ) proposed in some galaxy count studies, and find no evidence of a change in the Hubble constant corresponding to a void with a sharp edge in the redshift range 0.023 < z < 0.15. With an empirical precision of , we conclude that the distance ladder measurement is not affected by local density contrasts, in agreement with a cosmic variance of , predicted from simulations of large-scale structure. Given that uncertainty in the distance ladder value is , this does not affect the Hubble tension. We derive a 5σ constraint on local density contrasts on scales larger than of . The presence of local structure does not appear to impede the possibility of measuring the Hubble constant to 1% precision.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2386e56ed471e008fc7781c1e063e58d12ead3f1

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Citations in the corpus

Rock ‘n’ roll solutions to the Hubble tension (2019, background): “[11–16]) or a statistical fluctuation, it is possible that we are seeing the first signs of a theory beyond the standard cosmological model.”
Cosmology Intertwined II: The Hubble Constant Tension (2020, unknown): “[40] W.”
On the Evolution of the Hubble Constant with the SNe Ia Pantheon Sample and Baryon Acoustic Oscillations: A Feasibility Study for GRB-Cosmology in 2030 (2022, background): “Furthermore, according to [208], we consider the correction of the luminosity distance keeping into account the peculiar velocities of the host galaxies which contain the SNe Ia.”
The expansion of the Universe is faster than expected (2020, background): “Calculations show it exceeds 10σ [11] and is also strongly ruled out empirically by the lack of evidence of any end to the void from SNe Ia at greater distances [12].”
Nonminimal dark sector physics and cosmological tensions (2019, unknown): “[130, 131] for criticisms on both these possibilities).”
New physics in light of the H0 tension: An alternative view (2019, unknown): “also [26–41]).”
A buyer’s guide to the Hubble constant (2021, unknown): “11 of Scolnic et al. 2018), the lack of evidence for such a kink places limits on any local under-density (Kenworthy et al. 2019).”
On the Hubble Constant Tension in the SNe Ia Pantheon Sample (2021, methodology): “…a slight modification for the computation of luminosity distance (see Equation (8)), which in the case of SNe Ia is more precise according to Kenworthy et al. (2019): ò= + ¢ W + ¢ + W L d z z c z H dz z , 1 1 , 14 L hel HD hel z m0 0 0 3 0 HD ( ) ( ) ( ) ( ) where zhel is the heliocentric…”
A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team (2021, background): “Further, the increase in H0 that comes with the decrease in residuals runs counter to the hypothesis that the SN sample lives inside a large-scale void that artificially raises the local value of H0 (Kenworthy et al. 2019).”