Constraining the evolution of the baryon fraction in the IGM with FRB and H(z) data
文献类型：期刊论文
| 作者 | Wei, Jun-Jie1,2; Li, Zhengxiang3; Gao, He3; Wu, Xue-Feng1,4
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| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
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| 出版日期 | 2019-09-01 |
| 期号 | 9页码:17 |
| ISSN号 | 1475-7516 |
| 关键词 | intergalactic media baryon asymmetry |
| DOI | 10.1088/1475-7516/2019/09/039 |
| 通讯作者 | Wei, Jun-Jie(jjwei@pmo.ac.cn) |
| 英文摘要 | Extragalactic dispersion measures (DMs) obtained from observations of fast radio bursts (FRBs) are an excellent tool for probing intergalactic medium (IGM) and for conducting cosmography. However, the DM contribution from the IGM (DMIGM) depends on the fraction of baryon mass in the IGM, f(IGM), which is not properly constrained. As f(IGM)(z) is geometrically related to the Hubble parameter H(z) and DMIGM(z), here we propose that combining two independent measurements of FRBs and H(z) in similar redshift ranges provides a novel and cosmology-free method to constrain the evolution of f(IGM)(z). Under the assumption that f(IGM )is evolving with redshift in a functional form, we forecast that the evolution of f(IGM)(z) can be well inferred in a combined analysis of similar to 3000 DMIGM(z) derived from FRBs and similar to 50 H(z) derived from the Hubble parameter data. Though the efficiency of our method is not as good as that of the other model-independent method involving the joint measurements of DM and luminosity distance of FRBs, our method offers a new model-independent way to constrain f(IGM)(z). |
| WOS关键词 | FAST RADIO-BURST ; GAMMA-RAY BURSTS ; REIONIZATION HISTORY ; HOST GALAXY |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000487127500003 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/32211]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Wei, Jun-Jie |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210034, Jiangsu, Peoples R China 2.Guangxi Univ, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China 3.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 4.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Jun-Jie,Li, Zhengxiang,Gao, He,et al. Constraining the evolution of the baryon fraction in the IGM with FRB and H(z) data[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2019(9):17. |
| APA | Wei, Jun-Jie,Li, Zhengxiang,Gao, He,&Wu, Xue-Feng.(2019).Constraining the evolution of the baryon fraction in the IGM with FRB and H(z) data.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(9),17. |
| MLA | Wei, Jun-Jie,et al."Constraining the evolution of the baryon fraction in the IGM with FRB and H(z) data".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .9(2019):17. |
入库方式： OAI收割
来源：紫金山天文台
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