Study of Baryon Acoustic Oscillations with SDSS DR13 Data and Measurements of Ω<sub>k</sub>and Ω<sub>DE</sub>(a)

• 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: 数学
• 关键词: Cosmology Dark Energy BARYON ACOUSTIC OSCILLATIONS
• 年，卷（期）: 2017,（1）
• 页码范围: 11-27
• 页数: 17页
• 分类号: O1

摘要

We measure the baryon acoustic oscillation (BAO) observables , , and as a function of red shift z in the range 0.1 to 0.7 with Sloan Digital Sky Survey (SDSS) data release DR13. These observables are independent and satisfy a consistency relation that provides discrimination against miss-fits due to background fluctuations. From these measurements and the correlation angle of fluctuations of the Cosmic Microwave Background (CMB), we obtain , and for dark energy density allowed to vary as . We present measurements of at six values of the expansion parameter a. Fits with several scenarios and data sets are presented. The data is consistent with space curvature parameter? and constant.