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

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, $H_0=69.7\pm 1.2\, \rm {km \ s^{-1} \ Mpc^{-1}}$ and the current non-relativistic matter density parameter, Ωm0 = 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 favoured but mild dark energy dynamics and a little spatial curvature are not ruled out.