Constraining the reionization history with CMB and spectroscopic observations
文献类型：期刊论文
| 作者 | Dai, WM; Ma, YZ; Guo, ZK ; Cai, RG
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2019 |
| 卷号 | 99期号:4页码:43524 |
| ISSN号 | 2470-0010 |
| 关键词 | LY-ALPHA EMITTERS LYMAN-ALPHA NEUTRAL HYDROGEN EPOCH EVOLUTION REDSHIFT SPECTRUM UNIVERSE GALAXIES QUASAR |
| 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 |
| 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.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr NUCAC, ZA-4000 Durban, South Africa 5.Univ KwaZulu Natal, Sch Chem & Phys, Westville Campus,Private Bag X54001, ZA-4000 Durban, South Africa 6.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 7.[Guo, Zong-Kuan |
| 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. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。