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题名: Cosmic age test in inhomogeneous cosmological models mimicking Lambda CDM on the light cone
作者: Lan, Mi-Xiang ;  Li, Miao ;  Li, Xiao-Dong ;  Wang, Shuang
刊名: PHYSICAL REVIEW D
出版日期: 2010
卷号: 82, 期号:2, 页码:-
关键词: HOLOGRAPHIC DARK ENERGY ;  DIGITAL SKY SURVEY ;  GLOBULAR-CLUSTER MESSIER-4 ;  CONSTANT ;  CONSTRAINTS ;  SUPERNOVAE ;  SEQUENCE ;  DISTANCE ;  UNIVERSE ;  OMEGA
学科分类: Physics
通讯作者: Lan, MX , Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
部门归属: [Lan, MX; Li, XD; Wang, SA] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China; [Lan, MX; Li, MA; Li, XD; Wang, SA] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Li, MA] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Li, XD] Univ Sci & Technol China, Interdisciplinary Ctr Theoret Study, Hefei 230026, Peoples R China
英文摘要: 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.
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
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000280067700003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5076
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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):-.
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