DETERMINING THE HUBBLE CONSTANT FROM HUBBLE PARAMETER MEASUREMENTS
Yun ChenKey Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China; [email protected]Suresh KumarDepartment of Mathematics, BITS Pilani, Pilani Campus, Rajasthan-333031, India; [email protected]Bharat RatraDepartment of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, KS 66506, USA; [email protected]
2017en
ABI
Abstract
Abstract We use 28 measurements of the Hubble parameter, H ( z ), at intermediate redshifts to determine the present-day Hubble constant H 0 in four cosmological models. We measure , and Mpc −1 (1 σ errors) in the ΛCDM (spatially flat and non-flat), ω CDM, and ϕ CDM models, respectively. These measured H 0 values are more consistent with the lower values determined from recent data on the cosmic microwave background and baryon acoustic oscillations, as well as with the value found from a median statistical analysis of Huchra’s compilation of H 0 measurements, but include the higher local measurements of H 0 within the 2 σ confidence limits.
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