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Lan, Mi-Xiang; Li, Miao; Li, Xiao-Dong; Wang, Shuang; Lan, MX , Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
Cosmic age test in inhomogeneous cosmological models mimicking Lambda CDM on the light cone
发表期刊PHYSICAL REVIEW D
关键词Holographic Dark Energy Digital Sky Survey Globular-cluster Messier-4 Constant Constraints Supernovae Sequence Distance Universe Omega
摘要The possibility of reconstructing a spherically symmetric inhomogeneous Lemaitre-Tolman-Bondi (LTB) model with Lambda CDM observations has drawn much attention. Recently, an inhomogeneous LTB model having the same luminosity-distance and light-cone mass density of the homogeneous Lambda CDM model was reconstructed. From the Wilkinson microwave anisotropy probe 7-year measurements together with other cosmological observations, we calculate the cosmic age at our position in this LTB model, and obtain a constraint t(LTB) < 11.7 Gyr at 1 sigma confidence level. We find that this result is, although 2 Gyr younger compared with the age of the homogeneous Lambda CDM model, still within 1 sigma agreement with the constraint of cosmic age given by current astronomical measurements. We expect that in the future, with the help of more advanced observations, we can distinguish the reconstructed inhomogeneous LTB model from the homogeneous Lambda CDM model.
2010
ISSN1550-7998
卷号82期号:2页码:-
学科领域Physics
收录类别SCI
项目资助者Natural Science Foundation of China[10535060/A050207, 10975172, 10821504]; Ministry of Science and Technology[2007CB815401]; University of Science and Technology of China ; Natural Science Foundation of China[10535060/A050207, 10975172, 10821504]; Ministry of Science and Technology[2007CB815401]; University of Science and Technology of China ; Natural Science Foundation of China[10535060/A050207, 10975172, 10821504]; Ministry of Science and Technology[2007CB815401]; University of Science and Technology of China ; Natural Science Foundation of China[10535060/A050207, 10975172, 10821504]; Ministry of Science and Technology[2007CB815401]; University of Science and Technology of China
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被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5076
专题理论物理所科研产出_SCI论文
通讯作者Lan, MX , Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
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Lan, Mi-Xiang,Li, Miao,Li, Xiao-Dong,et al. Cosmic age test in inhomogeneous cosmological models mimicking Lambda CDM on the light cone[J]. PHYSICAL REVIEW D,2010,82(2):-.
APA Lan, Mi-Xiang,Li, Miao,Li, Xiao-Dong,Wang, Shuang,&Lan, MX , Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.(2010).Cosmic age test in inhomogeneous cosmological models mimicking Lambda CDM on the light cone.PHYSICAL REVIEW D,82(2),-.
MLA Lan, Mi-Xiang,et al."Cosmic age test in inhomogeneous cosmological models mimicking Lambda CDM on the light cone".PHYSICAL REVIEW D 82.2(2010):-.
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