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题名: New cosmological constraints with extended-Baryon Oscillation Spectroscopic Survey DR14 quasar sample
作者: Chen, L ;  Huang, QG ;  Wang, K
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2017
卷号: 77, 期号:11, 页码:762
学科分类: Physics
DOI: http://dx.doi.org/10.1140/epjc/s10052-017-5344-1
通讯作者: Chen, L (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China. ;  Chen, L (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China.
文章类型: Article
英文摘要: We update the constraints on the cosmological parameters by adopting the Planck data released in 2015 and baryon acoustic oscillation (BAO) measurements including the new DR14 quasar sample measurement at redshift z = 1.52, and we conclude that the six-parameter Lambda CDM model is preferred. Exploring some extensions to the Lambda CDM model, we find that the equation of state of dark energy reads w = -1.036 +/- 0.056 in the wCDM model, the effective number of relativistic degrees of freedom in the Universe is N-eff = 3.09(-0.20)(+0.18) in the N-eff + Lambda CDM model and the spatial curvature parameter is Omega(k) = (1.8 +/- 1.9) x 10(-3) in the Omega(k) + Lambda CDM model at 68% confidence level (C.L.), and the 95% C.L. upper bounds on the sum of three active neutrinos masses are Sigma m(v) < 0.16 eV for the normal hierarchy (NH) and Sigma m(v) < 0.19 eV for the inverted hierarchy (IH) with Delta chi(2) =chi(NH) (2) - chi(IH) (2) = -1.25.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: ACOUSTIC-OSCILLATIONS ;  GALAXIES
项目资助者: NSFC [11335012, 11575271, 11690021] ;  Top-Notch Young Talents Program of China ;  Frontier Sciences, CAS
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21933
Appears in Collections:理论物理所2017年知识产出_期刊论文

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Recommended Citation:
Chen, L,Huang, QG,Wang, K. New cosmological constraints with extended-Baryon Oscillation Spectroscopic Survey DR14 quasar sample[J]. EUROPEAN PHYSICAL JOURNAL C,2017,77(11):762.
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