Estimating cosmological parameters from observational data

In this work, it is performed statistical analyzes capable of estimating the current value of some of the main cosmological parameters, in particular, the rate of expansion of the Universe H0(Hubble Constant), the density of matter Ω0,m, the density of dark energy Ω0,Λ, the age of the Universe t0 and the deceleration parameter q0. In addition, it is discussed important observables as the Baryon Acoustic Oscillations and the Hubble Parameter, besides the Chi-square Method and some basic concepts and equations of Cosmology. From the detailed description presented it is intended to give an idea to non-specialists of how these values can be obtained from observational data available in the literature. Lastly it is performed a comparison of the results obtained in this work with those obtained by large international groups as the Planck Collaboration and the WMAP. The results are very restrictive and in agreement with those estimated by Planck Collaboration and the WMAP.

本研究开展了可用于估算若干核心宇宙学参数当前取值的统计分析工作，具体包括宇宙膨胀速率H₀（哈勃常数，Hubble Constant）、物质密度Ω₀,m、暗能量密度Ω₀,Λ、宇宙年龄t₀以及减速参数q₀。此外，本研究还探讨了重子声学振荡（Baryon Acoustic Oscillations）、哈勃参数等重要观测量，以及卡方检验法（Chi-square Method）与宇宙学的若干基础概念和方程。基于本次阐述的详细内容，本研究旨在向非专业人士说明如何通过文献中已公开的观测数据获取上述参数的取值。最后，本研究将本次工作所得结果与国际大型合作团队——普朗克合作组（Planck Collaboration）及WMAP所得结果进行了对比。本次研究所得结果具备较强约束性，且与普朗克合作组及WMAP的估算结果高度吻合。