Null test of the cosmic curvature using H(z) and supernovae data

doi:http://dx.doi.org/10.1103/PhysRevD.93.043517

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	Null test of the cosmic curvature using H(z) and supernovae data
	Cai, RG; Guo, ZK; Yang, T 1
刊名	PHYSICAL REVIEW D
	2016
卷号	93 期号:4 页码:43517
关键词	LUMINOUS RED GALAXIES DARK ENERGY SURVEY HUBBLE PARAMETER CONSTRAINTS CHRONOMETERS EXPANSION UNIVERSE GROWTH
DOI	http://dx.doi.org/10.1103/PhysRevD.93.043517
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.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences [XDB09000000] ; National Natural Science Foundation of China [11575272, 11335012]
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23241]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Guo, Zong-Kuan 2.[Cai, Rong-Gen 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	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.
APA	Cai, RG,Guo, ZK,&Yang, T.(2016).Null test of the cosmic curvature using H(z) and supernovae data.PHYSICAL REVIEW D,93(4),43517.
MLA	Cai, RG,et al."Null test of the cosmic curvature using H(z) and supernovae data".PHYSICAL REVIEW D 93.4(2016):43517.