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

• 作者: B. Hoeneisen
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 地球科学
• 关键词: COSMOLOGICAL Parameters BARYON Acoustic Oscillations Galaxy Distributions COSMIC Microwave Background
• 年，卷（期）: 2018,（4）
• 页码范围: 386-405
• 页数: 20页
• 分类号: P1

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 Ωm=0.2724±0.0047, and h+0.020⋅∑mv=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 ∑mv with new direct measurements of σ8, and obtain ∑mv=0.27±0.08 eV assuming three nearly degenerate neutrino eigenstates. Measurements are consistent with Ωk=0, and Ωde(a)=ΩΛ constant.