The age problem in the Lambda CDM model  
Yang, RJ; Zhang SN(张双南); Zhang, SN  
2010  
Source Publication  MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Volume  407Issue:3Pages:18351841 
Corresponding Author  [Yang, RongJia] 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 
Subtype  Article 
Abstract  The age problem in the Lambda CDM model is reexamined. 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 bestfitting 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 bestfitting age of APM 08279+ 5255 at z = 3.91. These results imply that the Lambda CDM model may suffer from an age problem. 
Keyword  cosmological parameters dark energy cosmology: observations cosmology: theory 
Subject Area  Astronomy & Astrophysics 
DOI  10.1111/j.13652966.2010.17020.x 
URL  查看原文 
Indexed By  SCI ; INSPIREHEP ; ADS 
Language  英语 
WOS Research Area  Astronomy & Astrophysics 
WOS Subject  Astronomy & Astrophysics 
WOS ID  WOS:000281797900033 
ADS Bibcode  2010MNRAS.407.1835Y 
ADS URL  https://ui.adsabs.harvard.edu/abs/2010MNRAS.407.1835Y 
ADS CITATIONS  https://ui.adsabs.harvard.edu/abs/2010MNRAS.407.1835Y/citations 
inspireid  820669 
inspireURL  https://inspirehep.net/literature/820669 
Citation statistics 
Cited Times:58 [INSPIRE]
Cited Times:54 [ADS]

Document Type  期刊论文 
Identifier  http://ir.ihep.ac.cn/handle/311005/239544 
Collection  粒子天体物理中心 
Affiliation  中国科学院高能物理研究所 
First Author Affilication  Institute of High Energy 
Recommended Citation GB/T 7714  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):18351841. 
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),18351841. 
MLA  Yang, RJ,et al."The age problem in the Lambda CDM model".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 407.3(2010):18351841. 
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