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题名: Constraints on the extensions to the base ACDM model from BICEP2, Planck and WMAP
作者: Cheng, C ;  Huang, QG ;  Zhao, W
刊名: SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期: 2014
卷号: 57, 期号:8, 页码:1460-1465
关键词: MICROWAVE BACKGROUND ANISOTROPIES ;  INFLATIONARY UNIVERSE ;  HUBBLE CONSTANT ;  FLATNESS ;  HORIZON
学科分类: Physics
DOI: 10.1007/s11433-014-5514-1
通讯作者: Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Cheng Cheng ;  Huang QingGuo] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China ;  [Cheng Cheng] Univ Chinese Acad Sci, Beijing 100190, Peoples R China ;  [Zhao Wen] Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China
英文摘要: Recently Background Imaging of Cosmic Extragalactia Polarization (B2) discovered the relic gravitational waves at 7.0 sigma confidence level. However, the other cosmic microwave background (CMB) data, for example Planck data released in 2013 (P13), prefer a much smaller amplitude of the primordial gravitational waves spectrum if a power-law spectrum of adiabatic scalar perturbations is assumed in the six-parameter ACDM cosmology. In this paper, we explore whether the wCDM model and the running spectral index can relax the tension between B2 and other CMB data. Specifically we found that a positive running of running of spectral index is preferred at 1.7 sigma level from the combination of B2, P13 and WMAP Polarization data.
资助者: National Natural Science Foundation of China [10821504, 11322545, 11335012, 11173021, 11322324]; KIP of the Chinese Academy of Sciences; National Basic Research Program of China [2012CB821804]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000339365800007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15695
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Cheng, C,Huang, QG,Zhao, W. Constraints on the extensions to the base ACDM model from BICEP2, Planck and WMAP[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2014,57(8):1460-1465.
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