Revisit of cosmic age problem

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	Revisit of cosmic age problem
	Wang, Shuang; Li, Xiao-Dong; Li, Miao; Wang, SA , Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
刊名	PHYSICAL REVIEW D
	2010
卷号	82 期号:10 页码:-
关键词	Holographic Dark Energy Equation-of-state Cosmological Constant Globular-clusters High-redshift Old Galaxies Constraints Universe Model Distributions
ISSN号	1550-7998
英文摘要	We investigate the cosmic age problem associated with 9 extremely old globular clusters in M31 galaxy and 1 very old high-z quasar automatic plate-measuring machine 08279 + 5255 at z = 3.91. These 9 globular clusters have not been used to study the cosmic age problem in the previous literature. By evaluating the age of the Universe in the Lambda cold dark matter model with the observational constraints from the Type Ia supernovae, the baryon acoustic oscillations, the cosmic microwave background, and the independent H(0) measurements, we find that the existence of 5 globular clusters and 1 high-z quasar are in tension (over 2 sigma confidence level) with the current cosmological observations. So if the age estimates of these objects are correct, the cosmic age puzzle still remains in the standard cosmology. Moreover, we extend our investigations to the cases of the interacting dark energy models. It is found that although the introduction of the interaction between dark sectors can give a larger cosmic age, the interacting dark energy models still have difficulty to pass the cosmic age test.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000284145300001
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5010]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Wang, SA , Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shuang,Li, Xiao-Dong,Li, Miao,et al. Revisit of cosmic age problem[J]. PHYSICAL REVIEW D,2010,82(10):-.
APA	Wang, Shuang,Li, Xiao-Dong,Li, Miao,&Wang, SA , Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.(2010).Revisit of cosmic age problem.PHYSICAL REVIEW D,82(10),-.
MLA	Wang, Shuang,et al."Revisit of cosmic age problem".PHYSICAL REVIEW D 82.10(2010):-.