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题名: Null test of the cosmic curvature using H(z) and supernovae data
作者: Cai, RG ;  Guo, ZK ;  Yang, T
刊名: PHYSICAL REVIEW D
出版日期: 2016
卷号: 93, 期号:4, 页码:43517
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.93.043517
通讯作者: Cai, RG ;  Guo, ZK ;  Yang, T (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: We introduce a model-independent approach to the null test of the cosmic curvature, which is geometrically related to the Hubble parameter H(z) and luminosity distance d(L)(z). Combining the independent observations of H(z) and d(L)(z), we use the model-independent smoothing technique, Gaussian processes, to reconstruct them and determine the cosmic curvature Omega((0))(K) in the null test relation. The null test is totally geometrical and does not assume any cosmological model. We show that the cosmic curvature Omega((0))(K) = 0 is consistent with current observational data sets, falling within the 1 sigma limit. To demonstrate the effect on the precision of the null test, we produce a series of simulated data of the models with different Omega((0))(K) . Future observations in better quality can provide a greater improvement to constrain or refute the flat universe with Omega((0))(K) = 0.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: LUMINOUS RED GALAXIES ;  DARK ENERGY SURVEY ;  HUBBLE PARAMETER ;  CONSTRAINTS ;  CHRONOMETERS ;  EXPANSION ;  UNIVERSE ;  GROWTH
收录类别: SCI
项目资助者: Strategic Priority Research Program of the Chinese Academy of Sciences [XDB09000000] ;  National Natural Science Foundation of China [11575272, 11335012]
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21765
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Recommended Citation:
Cai, RG,Guo, ZK,Yang, T. Null test of the cosmic curvature using H(z) and supernovae data[J]. PHYSICAL REVIEW D,2016,93(4):43517.
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