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Effect of the early reionization on the cosmic microwave background and cosmological parameter estimates
Huang, QG; Wang, K; 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.
2017
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
期号7页码:42
文章类型Article
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.
关键词Reionization Cmbr Polarisation Cmbr Theory Cosmological Parameters From Cmbr
学科领域Astronomy & Astrophysics ; Physics
资助者NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS
DOIhttp://dx.doi.org/10.1088/1475-7516/2017/07/042
关键词[WOS]BARYON ACOUSTIC-OSCILLATIONS ; GALAXIES ; PLANCK ; POLARIZATION ; CONSTRAINTS ; SAMPLE ; EPOCH
语种英语
资助者NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; NSFC [11335012, 11575271, 11690021] ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Top-Notch Young Talents Program of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22186
专题计算平台成果
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.
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GB/T 7714
Huang, QG,Wang, K,Huang, QG . Effect of the early reionization on the cosmic microwave background and cosmological parameter estimates[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2017(7):42.
APA Huang, QG,Wang, K,&Huang, QG .(2017).Effect of the early reionization on the cosmic microwave background and cosmological parameter estimates.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(7),42.
MLA Huang, QG,et al."Effect of the early reionization on the cosmic microwave background and cosmological parameter estimates".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .7(2017):42.
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