Measurements of the cosmological parameters $\Omega_m$, $\Omega_k$, $\Omega_\textrm{de}(a)$, $H_0$, and $\sum m_\nu$

Abstract

From Baryon Acoustic Oscillation measurements with Sloan Digital Sky Survey SDSS DR14 galaxies, and the acoustic horizon angle $\theta_*$ measured by the Planck Collaboration, we obtain $\Omega_m = 0.2724 \pm 0.0047$, and $h + 0.020 \cdot \sum{m_\nu} = 0.7038 \pm 0.0060$, assuming flat space and a cosmological constant. We combine this result with the 2018 Planck `TT,TE,EE$+$lowE$+$lensing' analysis, and update a study of $\sum m_\nu$ with new direct measurements of $\sigma_8$, and obtain $\sum m_\nu = 0.27 \pm 0.08$ eV assuming three nearly degenerate neutrino eigenstates. Measurements are consistent with $\Omega_k = 0$, and $\Omega_\textrm{de}(a) = \Omega_\Lambda$ constant.