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Constraining the evolution of the baryon fraction in the IGM with FRB and H(z) data
Wei, Jun-Jie1,2; Li, Zhengxiang3; Gao, He3; Wu, Xue-Feng1,4
2019-09-01
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
Issue9Pages:17
Corresponding AuthorWei, Jun-Jie(jjwei@pmo.ac.cn)
AbstractExtragalactic 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).
Keywordintergalactic media baryon asymmetry
DOI10.1088/1475-7516/2019/09/039
WOS KeywordFAST RADIO-BURST ; GAMMA-RAY BURSTS ; REIONIZATION HISTORY ; HOST GALAXY
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000487127500003
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/32212
Collection中国科学院紫金山天文台
Corresponding AuthorWei, Jun-Jie
Affiliation1.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
Recommended Citation
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.
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