Constraining the reionization history with CMB and spectroscopic observations

doi:10.1103/PhysRevD.99.043524

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Constraining the reionization history with CMB and spectroscopic observations
	Dai, WM ; Ma, YZ ; Guo, ZK ; Cai, RG
刊名	PHYSICAL REVIEW D
	2019
卷号	99 期号:4 页码:43524
关键词	LY-ALPHA EMITTERS LYMAN-ALPHA NEUTRAL HYDROGEN EPOCH EVOLUTION REDSHIFT SPECTRUM UNIVERSE GALAXIES QUASAR
ISSN号	2470-0010
DOI	10.1103/PhysRevD.99.043524
英文摘要	We investigate the constraints on the reionization history of the Universe from a joint analysis of the cosmic microwave background and neutral hydrogen fraction data. The tanh parametrization and principal component analysis methods are applied to the reionization history respectively. The commonly used tanh parametrization is oversimplistic when the neutral hydrogen fraction data are taken into account. Using the principal component analysis method, the reconstructed reionization history is consistent with the neutral hydrogen fraction data. With the principal component analysis method, we reconstruct the neutral hydrogen fraction at z = 9.75 as x(HI) = 0.69(-0.30)(+0.32) for 6 < z < 20 range reconstruction, and x(HI) = 0.76(-0.22)(+0.27) for 6 < z < 30 range reconstruction. These results suggest that the Universe began to reionize at redshift no later than z = 10 at a 95% confidence level.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23483]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.[Dai, Wei-Ming 2.Guo, Zong-Kuan 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China 4.[Guo, Zong-Kuan 5.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 6.Univ KwaZulu Natal, Sch Chem & Phys, Westville Campus,Private Bag X54001, ZA-4000 Durban, South Africa 7.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr NUCAC, ZA-4000 Durban, South Africa
推荐引用方式 GB/T 7714	Dai, WM,Ma, YZ,Guo, ZK,et al. Constraining the reionization history with CMB and spectroscopic observations[J]. PHYSICAL REVIEW D,2019,99(4):43524.
APA	Dai, WM,Ma, YZ,Guo, ZK,&Cai, RG.(2019).Constraining the reionization history with CMB and spectroscopic observations.PHYSICAL REVIEW D,99(4),43524.
MLA	Dai, WM,et al."Constraining the reionization history with CMB and spectroscopic observations".PHYSICAL REVIEW D 99.4(2019):43524.