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Cosmological Constraints from Line Intensity Mapping with Interlopers

文献类型：期刊论文

作者Gong, Yan2; Chen, Xuelei1,3,4; Cooray, Asantha5
刊名ASTROPHYSICAL JOURNAL
出版日期2020-05-01
卷号894期号:2页码:13
ISSN号0004-637X
关键词Cosmology Cosmological parameters from large-scale structure
DOI10.3847/1538-4357/ab87a0
英文摘要Understanding the formation and evolution of the universe is crucial for cosmological studies, and line intensity mapping provides a powerful tool for this kind of study. We propose to make use of multipole moments of a redshift-space line intensity power spectrum to constrain the cosmological and astrophysical parameters, such as the equation of state of dark energy, massive neutrinos, primordial non-Gaussianity, and star formation rate density. As an example, we generate mock data of multipole power spectra for H alpha 6563 A, [O iii] 5007 A, and [O ii] 3727 A measured by the SPHEREx experiment at z = 1 considering contaminations from interloper lines, and use the Markov Chain Monte Carlo method to constrain the parameters in the model. We find a good fitting result of the parameters compared to their fiducial values, which means that the multipole power spectrum can effectively distinguish signal and interloper lines, and break the degeneracies between parameters, such as line mean intensity and bias. We also explore the cross-power spectrum with the Chinese Space Station Telescope spectroscopic galaxy survey in the constraints. Since more accurate fitting results can be obtained by including measurements of the emission lines at higher redshifts out to at least z = 3, and cross-correlations between emission lines can be involved, line intensity mapping is expected to offer excellent results in future cosmological and astrophysical studies.
WOS关键词STAR-FORMATION ; PERTURBATIONS ; EVOLUTION ; EMISSION
资助项目Chinese Academy of Sciences (CAS) Strategic Priority Research Program[NSFC-11773031] ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program[NSFC-11822305] ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program[NSFC-11633004] ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program[MOST-2018YFE0120800] ; NSFC-ISF joint research program[XDA15020200] ; CAS Interdisciplinary Innovation Team[11761141012]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000536102400001
资助机构Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; NSFC-ISF joint research program ; NSFC-ISF joint research program ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; NSFC-ISF joint research program ; NSFC-ISF joint research program ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; NSFC-ISF joint research program ; NSFC-ISF joint research program ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; NSFC-ISF joint research program ; NSFC-ISF joint research program ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team
源URL[http://ir.bao.ac.cn/handle/114a11/54741]  
专题中国科学院国家天文台
通讯作者Gong, Yan
作者单位1.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Key Lab Space Astron & Technol, Natl Astron Observ, Beijing 100012, Peoples R China
3.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
5.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
推荐引用方式
GB/T 7714		 Gong, Yan,Chen, Xuelei,Cooray, Asantha. Cosmological Constraints from Line Intensity Mapping with Interlopers[J]. ASTROPHYSICAL JOURNAL,2020,894(2):13.
APA Gong, Yan,Chen, Xuelei,&Cooray, Asantha.(2020).Cosmological Constraints from Line Intensity Mapping with Interlopers.ASTROPHYSICAL JOURNAL,894(2),13.
MLA Gong, Yan,et al."Cosmological Constraints from Line Intensity Mapping with Interlopers".ASTROPHYSICAL JOURNAL 894.2(2020):13.

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来源：国家天文台

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