NEW MODEL-INDEPENDENT METHOD TO TEST THE CURVATURE OF THE UNIVERSE

被引：62
|
作者：
Yu, H. [1 ]
Wang, F. Y. [1 ,2 ]
机构：
[1] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
来源：
ASTROPHYSICAL JOURNAL | 2016年 / 828卷 / 02期
基金：
中国国家自然科学基金;
关键词：
cosmological parameters; cosmology: observations; BARYON ACOUSTIC-OSCILLATIONS; DARK ENERGY; D-A; GALAXIES; H(Z);
D O I：
10.3847/0004-637X/828/2/85
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We propose a new model-independent method to test the cosmic curvature by comparing the proper distance and transverse comoving distance. Using the measurements of the Hubble parameter H(z) and the angular diameter distance d(A), the cosmic curvature parameter Omega(K) is constrained to be -0.09 +/- 0.19, which is consistent with a flat universe. We also use a. Monte Carlo simulation to test the validity and efficiency, and find that our method can give a reliable and efficient constraint on cosmic curvature. Compared with other model-independent methods testing the cosmic curvature, our method can avoid some drawbacks and give a better constraint.
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页数：6
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