The tension on the cosmological parameters from different observational data

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	The tension on the cosmological parameters from different observational data
	Gao, Q; Gong, YG
刊名	CLASSICAL AND QUANTUM GRAVITY
	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
ISSN号	0264-9381
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.
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.
学科主题	Physics
收录类别	SCI
资助信息	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]
原文出处	http://dx.doi.org/10.1088/0264-9381/31/10/105007
语种	英语
WOS记录号	WOS:000336092700008
公开日期	2015-06-03
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15757]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Gao, Q,Gong, YG. The tension on the cosmological parameters from different observational data[J]. CLASSICAL AND QUANTUM GRAVITY,2014,31(10):105007.
APA	Gao, Q,&Gong, YG.(2014).The tension on the cosmological parameters from different observational data.CLASSICAL AND QUANTUM GRAVITY,31(10),105007.
MLA	Gao, Q,et al."The tension on the cosmological parameters from different observational data".CLASSICAL AND QUANTUM GRAVITY 31.10(2014):105007.