Measurements of the Cosmological Parameters Ω&sub&m&/sub& and &i&H&/i&&sub&0&/sub&

摘要

From Baryon Acoustic Oscillation measurements with Sloan Digital Sky Survey SDSS DR14 galaxies, and the acoustic horizon angle measured by the Planck Collaboration, we obtain Ω_( m )=0.2724±0.0047 , and h +0.020 ⋅ ∑ m _( v )=0.7038±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 ∑ m _( v ) with new direct measurements of σ_(8) , and obtain ∑ m _( v )=0.27±0.08 eV assuming three nearly degenerate neutrino eigenstates. Measurements are consistent with Ω_(k)=0 , and Ω_(de)( a )=Ω_(Λ) constant.