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题名: Cosmological parameter estimation from CMB and X-ray cluster after Planck
作者: Hu, JW;  Cai, RG;  Guo, ZK;  Hu, B
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2014
期号: 5, 页码:20
关键词: MICROWAVE BACKGROUND ANISOTROPIES ;  BARYON ACOUSTIC-OSCILLATIONS ;  MASS-TEMPERATURE RELATION ;  SOUTH-POLE TELESCOPE ;  SPT-SZ SURVEY ;  GALAXY CLUSTERS ;  HUBBLE CONSTANT ;  POWER SPECTRUM ;  CHANDRA SAMPLE ;  DAMPING TAIL
学科分类: Physics
DOI: 10.1088/1475-7516/2014/05/020
通讯作者: Hu, JW (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
部门归属: [Hu, Jian-Wei
英文摘要: . We investigate constraints on cosmological parameters in three 8-parameter models with the summed neutrino mass as a free parameter, by a joint analysis of CCCP X-ray cluster data, the newly released Planck CMB data as well as some external data sets including baryon acoustic oscillation measurements from the 6dFGS, SDSS DR7 and BOSS DR9 surveys, and Hubble Space Telescope Ho measurement. We find that the combined data strongly favor a non-zero neutrino masses at more than 3 sigma confidence level in these non-vanilla models. Allowing the CMB lensing amplitude A(L) to vary, we find A(L) > 1 at 3 sigma confidence level. For dark energy with a constant equation of state w, we obtain w < -1 at 3 sigma confidence level. The estimate of the matter power spectrum amplitude 08 is discrepant with the Planck value at 2 sigma confidence level, which reflects some tension between X-ray cluster data and Planck data in these non-vanilla models. The tension can be alleviated by adding a 9% systematic shift in the cluster mass function.
资助者: project of Knowledge Innovation Program of Chinese Academy of Science, NSFC [11175225, 11335012]; National Basic Research Program of China [2010CB832805, 2010CB833004]; Dutch Foundation for Fundamental Research on Matter (FOM)
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000336092200022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15770
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Recommended Citation:
Hu, JW,Cai, RG,Guo, ZK,et al. Cosmological parameter estimation from CMB and X-ray cluster after Planck[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2014(5):20.
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