Using lower-redshift, non-CMB, data to constrain the Hubble constant and other cosmological parameters

Journal Article · 29 April 2022 · Monthly Notices of the Royal Astronomical Society

DOI: https://doi.org/10.1093/mnras/stac1184 · OSTI ID:1979535

Cao, Shulei  ^[1]; Ratra, Bharat ^[1]

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1. Kansas State University, Manhattan, KS (United States)

Here we use updated Hubble parameter and baryon acoustic oscillation data, as well as other lower-redshift Type Ia supernova, Mg ii reverberation-measured quasar, quasar angular size, H ii starburst galaxy, and Amati-correlated gamma-ray burst data, to jointly constrain cosmological parameters in six cosmological models. The joint analysis provides model-independent determinations of the Hubble constant, H₀ = 69.7 ± 1.2 km s^-1 Mpc^-1, and the current non-relativistic matter density parameter, Ω_m0 = 0.295 ± 0.017. These error bars are factors of 2.2 and 2.3 larger than the corresponding error bars in the flat ΛCDM model from Planck TT,TE,EE+lowE+lensing cosmic microwave background anisotropy data. Based on the deviance information criterion (DIC), the flat ΛCDM model is most favored but mild dark energy dynamics and a little spatial curvature are not ruled out.

• Research Organization: Kansas State Univ., Manhattan, KS (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Science Foundation (NSF); National Institutes of Health (NIH)
• Grant/Contract Number: SC0011840; CNS-1006860; EPS-1006860; EPS-0919443; ACI-1440548; CHE-1726332; P20GM113109
• OSTI ID: 1979535
• Journal Information: Monthly Notices of the Royal Astronomical Society, Vol. 513, Issue 4; ISSN 0035-8711
• Publisher: Oxford University PressCopyright Statement
• Country of Publication: United States
• Language: English