Revisiting the Hubble constant, sound horizon and cosmography from late-time Universe observations
Abstract
The Hubble tension has become one of the central problems in cosmology. In this work, we determine the Hubble constant H0 and sound horizon rd by using the combination of Baryon Acoustic Oscillations (BAOs) from DESI surveys, time-delay lensed quasars from H0LiCOW collaborations and the Pantheon supernovae observations. We consider two cosmological approaches, i.e., Taylor series and Pad\'e polynomials, to avoid cosmological dependence. The reason for using this combination of data is that the absolute distance provided by strong gravitational lensing helps anchor the relative distance of BAO, and supernovae provide a robust history of universe evolution. Combining the 6 time-delay distance (6D t) plus 4 angular diameter distance to the deflector (4Dd) measurements of time-delay lensed quasars, the BAO and the type Ia of supernovae (SNe Ia) datasets, we obtain a model-independent result of rd = 138.2-3.9+3.3 Mpc and H0 = 72.9+1.8-1.8 ~km~s-1~Mpc-1 for the Taylor series cosmography and rd = 137.0-3.7+3.2 Mpc and H0 = 73.1-1.7+1.8 ~km~s-1~Mpc-1 for the Pad\'e polynomials cosmography. The determination of rd and H0 prefers larger H0 and smaller rd than Planck data under the assumption of flat- model. However, the values of H0 are consistent with the H0 determination from SH0ES collaboration.
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