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题名: The tension on the cosmological parameters from different observational data
作者: Gao, Q;  Gong, YG
刊名: CLASSICAL AND QUANTUM GRAVITY
出版日期: 2014
卷号: 31, 期号:10, 页码:105007
关键词: BARYON ACOUSTIC-OSCILLATIONS ;  EQUATION-OF-STATE ;  DARK-ENERGY ;  IA SUPERNOVAE ;  MEASUREMENT CONSTRAINTS ;  COSMIC ACCELERATION ;  REDSHIFT ;  GRAVITY ;  SPACE ;  CONSTANT
学科分类: Physics
DOI: 10.1088/0264-9381/31/10/105007
通讯作者: Gong, YG (reprint author), Huazhong Univ Sci & Technol, Sch Phys, MOE Key Lab Fundamental Quant Measurement, Wuhan 430074, Peoples R China.
部门归属: [Gao, Qing
英文摘要: Planck measurements of the cosmic microwave background power spectra find a lower value of the Hubble constant H-0 and a higher value of the fractional matter energy density Omega(m0) for the concordance Lambda CDMmodel, and these results are in tension with other measurements. The Planck group argued that the tension came either from some sources of unknown systematic errors in some astrophysical measurements or the wrong Lambda CDM model applied in fitting the data. We studied the reason for the tension on H-0 from different measurements by considering two dynamical dark energy models. We found that there is no tension between different data, the constraint on H-0 is almost unchanged for different dark energy models and the tension with the local measurements remains when the error bar on H-0 is tightened to be around 1. We argue that the tension on H-0 is not caused by the fitting model.
资助者: National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000336092700008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15757
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Recommended Citation:
Gao, Q,Gong, YG. The tension on the cosmological parameters from different observational data[J]. CLASSICAL AND QUANTUM GRAVITY,2014,31(10):105007.
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