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题名: Effect of the early reionization on the cosmic microwave background and cosmological parameter estimates
作者: Huang, QG;  Wang, K
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2017
期号: 7, 页码:42
关键词: reionization ;  CMBR polarisation ;  CMBR theory ;  cosmological parameters from CMBR
学科分类: Astronomy & Astrophysics ;  Physics
DOI: http://dx.doi.org/10.1088/1475-7516/2017/07/042
通讯作者: Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: The early reionization (ERE) is supposed to be a physical process which happens after recombination, but before the instantaneous reionization caused by the first generation of stars. We investigate the effect of the ERE on the temperature and polarization power spectra of cosmic microwave background (CMB), and adopt principal components analysis (PCA) to model-independently reconstruct the ionization history during the ERE. In addition, we also discuss how the ERE affects the cosmological parameter estimates, and find that the ERE does not impose any significant influences on the tensor-to-scalar ratio r and the neutrino mass at the sensitivities of current experiments. The better CMB polarization data can be used to give a tighter constraint on the ERE and might be important for more precisely constraining cosmological parameters in the future.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: BARYON ACOUSTIC-OSCILLATIONS ;  GALAXIES ;  PLANCK ;  POLARIZATION ;  CONSTRAINTS ;  SAMPLE ;  EPOCH
项目资助者: NSFC [11335012, 11575271, 11690021] ;  Top-Notch Young Talents Program of China ;  Key Research Program of 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/311006/22186
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Recommended Citation:
Huang, QG,Wang, K. Effect of the early reionization on the cosmic microwave background and cosmological parameter estimates[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2017(7):42.
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文件名: Effect of the early reionization on the cosmic microwave background and cosmological parameter estimates - Huang, Wang - 2017.pdf
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