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The age problem in the Lambda CDM model
Yang, RJ; Zhang SN(张双南); Zhang, SN
2010
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号407期号:3页码:1835-1841
通讯作者[Yang, Rong-Jia] Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China ; [Zhang, Shuang Nan] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Zhang, Shuang Nan] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA
文章类型Article
摘要The age problem in the Lambda CDM model is re-examined. We define the elapsed time T of an object as its age plus the age of the Universe when it was born. Therefore in any cosmology T must be smaller than the age of the Universe. For the old quasar APM 08279+5255 at z = 3.91, previous studies have determined that the best-fitting value of T, 1 sigma lower limit and lowest limit to T are 2.3, 2.0 and 1.7 Gyr, respectively. Constrained from SNIa+R+A+d, SNIa+R+A+d+H(z) and WMAP5+2dF+SNLS+HST+BBN, the Lambda CDM model can only accommodate T(z = 3.91) = 1.7Gyr at 1 sigma deviation. Constrained from WMAP5 results only, the Lambda CDM model can only accommodate T(z = 3.91) = 1.7Gyr at 2 sigma deviation. In all these cases, we found that the Lambda CDM model accommodates the total age (14 Gyr for z = 0) of the Universe estimated from old globular clusters, but cannot accommodate statistically the 1s lower limit to the best-fitting age of APM 08279+ 5255 at z = 3.91. These results imply that the Lambda CDM model may suffer from an age problem.
关键词cosmological parameters dark energy cosmology: observations cosmology: theory
学科领域Astronomy & Astrophysics
DOI10.1111/j.1365-2966.2010.17020.x
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语种英语
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000281797900033
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239544
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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Yang, RJ,Zhang SN,Zhang, SN. The age problem in the Lambda CDM model[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,407(3):1835-1841.
APA Yang, RJ,张双南,&Zhang, SN.(2010).The age problem in the Lambda CDM model.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,407(3),1835-1841.
MLA Yang, RJ,et al."The age problem in the Lambda CDM model".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 407.3(2010):1835-1841.
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