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Precise measurements of inflationary features with 21 cm observations
Xu, Yidong1; Hamann, Jan2; Chen, Xuelei1,3,4
2016-12-21
Source PublicationPHYSICAL REVIEW D
Volume94Issue:12
AbstractFuture observations of 21 cm emission using neutral hydrogen intensity mapping will enable us to probe the large scale structure of the Universe over very large survey volumes within a reasonable observation time. We demonstrate that the three-dimensional information contained in such surveys will be an extremely powerful tool in searching for features that were imprinted in the primordial power spectrum and bispectrum during inflation. Here, we focus on the "resonant" and "step" inflation models and forecast the potential of upcoming 21 cm experiments to detect these inflationary features in the observable power spectrum and bispectrum. We find that the full scale Tianlai experiment and the Square Kilometre Array have the potential to improve on the sensitivity of current cosmic microwave background experiments by several orders of magnitude.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11303034) ; National Natural Science Foundation of China (NSFC)(11303034) ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Future Fellowship of the Australian Research Council ; Future Fellowship of the Australian Research Council ; Ministry of Science and Technology of the People's Republic of China (MoST) 863 program(2012AA121701) ; Ministry of Science and Technology of the People's Republic of China (MoST) 863 program(2012AA121701) ; Chinese Academy of Sciences (CAS) strategic Priority Research Program(XDB09020301) ; Chinese Academy of Sciences (CAS) strategic Priority Research Program(XDB09020301) ; CAS Grant(QYZDJ-SSW-SLH017) ; CAS Grant(QYZDJ-SSW-SLH017) ; NSFC Grant(11373030) ; NSFC Grant(11373030) ; National Natural Science Foundation of China (NSFC)(11303034) ; National Natural Science Foundation of China (NSFC)(11303034) ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Future Fellowship of the Australian Research Council ; Future Fellowship of the Australian Research Council ; Ministry of Science and Technology of the People's Republic of China (MoST) 863 program(2012AA121701) ; Ministry of Science and Technology of the People's Republic of China (MoST) 863 program(2012AA121701) ; Chinese Academy of Sciences (CAS) strategic Priority Research Program(XDB09020301) ; Chinese Academy of Sciences (CAS) strategic Priority Research Program(XDB09020301) ; CAS Grant(QYZDJ-SSW-SLH017) ; CAS Grant(QYZDJ-SSW-SLH017) ; NSFC Grant(11373030) ; NSFC Grant(11373030)
DOI10.1103/PhysRevD.94.123518
WOS KeywordBISPECTRUM
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11303034) ; National Natural Science Foundation of China (NSFC)(11303034) ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Future Fellowship of the Australian Research Council ; Future Fellowship of the Australian Research Council ; Ministry of Science and Technology of the People's Republic of China (MoST) 863 program(2012AA121701) ; Ministry of Science and Technology of the People's Republic of China (MoST) 863 program(2012AA121701) ; Chinese Academy of Sciences (CAS) strategic Priority Research Program(XDB09020301) ; Chinese Academy of Sciences (CAS) strategic Priority Research Program(XDB09020301) ; CAS Grant(QYZDJ-SSW-SLH017) ; CAS Grant(QYZDJ-SSW-SLH017) ; NSFC Grant(11373030) ; NSFC Grant(11373030) ; National Natural Science Foundation of China (NSFC)(11303034) ; National Natural Science Foundation of China (NSFC)(11303034) ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences ; Future Fellowship of the Australian Research Council ; Future Fellowship of the Australian Research Council ; Ministry of Science and Technology of the People's Republic of China (MoST) 863 program(2012AA121701) ; Ministry of Science and Technology of the People's Republic of China (MoST) 863 program(2012AA121701) ; Chinese Academy of Sciences (CAS) strategic Priority Research Program(XDB09020301) ; Chinese Academy of Sciences (CAS) strategic Priority Research Program(XDB09020301) ; CAS Grant(QYZDJ-SSW-SLH017) ; CAS Grant(QYZDJ-SSW-SLH017) ; NSFC Grant(11373030) ; NSFC Grant(11373030)
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000415935400003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20293
Collection星系宇宙学研究部
Affiliation1.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China
2.Univ Sydney, Sydney Inst Astron, Sydney, NSW 2006, Australia
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Xu, Yidong,Hamann, Jan,Chen, Xuelei. Precise measurements of inflationary features with 21 cm observations[J]. PHYSICAL REVIEW D,2016,94(12).
APA Xu, Yidong,Hamann, Jan,&Chen, Xuelei.(2016).Precise measurements of inflationary features with 21 cm observations.PHYSICAL REVIEW D,94(12).
MLA Xu, Yidong,et al."Precise measurements of inflationary features with 21 cm observations".PHYSICAL REVIEW D 94.12(2016).
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