Knowledge Management System of Institute of Theoretical Physics, CAS
Dai, Wei-Ming; Ma, Yin-Zhe; Guo, Zong-Kuan ; Cai, Rong-Gen
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| Constraining the reionization history with CMB and spectroscopic observations | |
| Source Publication | PHYSICAL REVIEW D
 |
| Language | 英语 |
| Keyword | LY-ALPHA EMITTERS LYMAN-ALPHA NEUTRAL HYDROGEN EPOCH EVOLUTION REDSHIFT SPECTRUM UNIVERSE GALAXIES QUASAR |
| Abstract | 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. |
| 2019 | |
| ISSN | 2470-0010 |
| Volume | 99Issue:4Pages:43524 |
| Cooperation Status | 国际 |
| Subject Area | Astronomy & Astrophysics ; Physics |
| MOST Discipline Catalogue | Astronomy & Astrophysics ; Physics, Particles & Fields |
| DOI | 10.1103/PhysRevD.99.043524 |
| Indexed By | SCIE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/27187 |
| Collection | SCI期刊论文 |
| Affiliation | 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 |
| Recommended Citation GB/T 7714 | Dai, Wei-Ming,Ma, Yin-Zhe,Guo, Zong-Kuan,et al. Constraining the reionization history with CMB and spectroscopic observations[J]. PHYSICAL REVIEW D,2019,99(4):43524. |
| APA | Dai, Wei-Ming,Ma, Yin-Zhe,Guo, Zong-Kuan,&Cai, Rong-Gen.(2019).Constraining the reionization history with CMB and spectroscopic observations.PHYSICAL REVIEW D,99(4),43524. |
| MLA | Dai, Wei-Ming,et al."Constraining the reionization history with CMB and spectroscopic observations".PHYSICAL REVIEW D 99.4(2019):43524. |
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