Cited by 80Cosmology and Gravitation TheoriesGalaxies: Formation, Evolution, PhenomenaGamma-ray bursts and supernovae

Determining Model-independent H0 and Consistency Tests

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Liao, Kai, Shafieloo, Arman, Keeley, Ryan E., Linder, Eric V.·2020·The Astrophysical Journal Letters

Abstract

We determine the Hubble constant H 0 precisely (2.3% uncertainty) in a manner independent of the cosmological model through Gaussian process regression, using strong lensing and supernova data. Strong gravitational lensing of a variable source can provide a time-delay distance D Δ t and angular diameter distance to the lens D d. These absolute distances can anchor Type Ia supernovae, which give an excellent constraint on the shape of the distance–redshift relation. Updating our previous results to use the H0LiCOW program’s milestone data set consisting of six lenses, four of which have both D Δ t and D d measurements, we obtain for a flat universe and for a non-flat universe. We carry out several consistency checks on the data and find no statistically significant tensions, though a noticeable redshift dependence persists in a particular systematic manner that we investigate. Speculating on the possibility that this trend of derived Hubble constant with lens distance is physical, we show how this can arise through modified gravity light propagation, which would also impact the weak lensing σ 8 tension.

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  • TDCOSMO results relax assumptions on lens mass density profile, obtain much weaker bounds, and once combined with SLACS shift H0 towards a lower value.

    “the latest TDCOSMO results relax the assumptions on the lens mass density profile, obtaining much weaker bounds, and once combined with SLACS, they shift H 0 towards a lower value.”

    From Challenges of the Standard Cosmological Model (2022) · cites this paper as [46]

    Section 2 discusses H0LiCOW lens distances and lens mass-profile parameters, while Section 3 reports H₀ estimates from those distances. Neither the supplied passages nor searches for TDCOSMO, SLACS, and relaxed mass-profile assumptions address weaker bounds or a lower H₀ after combining with SLACS. Page numbers were not available in our copy. (LLM, conf=0.75)

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Research works printed but not linked: 7

  1. Koo, H., Shafieloo, A., Keeley, R. E., & L'Huillier, B. 2020, arXiv:2001.10887 · arXiv
  2. Millon, M., Galan, A., Courbin, F., et al. arXiv:1912.08027 · arXiv
  3. Pandey, S., Raveri, M., & Jain, B. 2019, arXiv:1912.04325 · arXiv
  4. Philcox, O. H. E., Ivanov, M. M., Simonović, M., & Zaldarriaga, M. 2020, arXiv:2002.04035 · arXiv
  5. Rusu, C. E., Wong, K. C., Bonvin, V., et al. 2019, arXiv: 1905.09338 · arXiv
  6. Weinberg, S. 1972, Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity (New York: Wiley)
  7. Wong, K. C., Suyu, S. H., Chen, G. C.-F., et al. 2019, arXiv:1907.04869 · arXiv

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Authors
Liao, K., Shafieloo, A., Keeley, R. E., & Linder, E. V.
Affiliations
  • Wuhan University of Technology (CN)
  • Korea Astronomy and Space Science Institute (KR)
  • Lawrence Berkeley National Laboratory (US)
Corresponding author
Shafieloo, Arman
Venue
The Astrophysical Journal Letters
Published
2020-05-27
Volume
895
Issue
2
Pages
L29
ISSN
  • 2041-8205 (ISSN-L)
  • 2041-8213
OpenAlex
W3031490922
Cited by
80
References
30
Citations by year
2026: 4 · 2025: 16 · 2024: 10 · 2023: 6 · 2022: 19 · 2021: 12 · 2020: 13
FWCI
5.57
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal Letters (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Nazarbayev University Repository (Nazarbayev University) (submittedVersion)
  • Nazarbayev University Repository (Nazarbayev University) (submittedVersion, cc-by-nc-sa)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Gamma-ray bursts and supernovae
Keywords
Hubble constant, strong gravitational lensing, time-delay distance, angular diameter distance, Type Ia supernovae, distance-redshift relation, H0LiCOW, Gaussian process regression, Hubble tension, modified gravity

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