Precise measurements of inflationary features with 21 cm observations

doi:10.1103/PhysRevD.94.123518

	Precise measurements of inflationary features with 21 cm observations
	Hamann, Jan 4; Chen, Xuelei1,2,3 ; Xu, Yidong3
刊名	PHYSICAL REVIEW D
	2016-12-21
卷号	94 期号:12
DOI	10.1103/PhysRevD.94.123518
文献子类	Article
英文摘要	Future 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.
WOS关键词	BISPECTRUM
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000415935400003
资助机构	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) ; 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)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/20293]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China 4.Univ Sydney, Sydney Inst Astron, Sydney, NSW 2006, Australia
推荐引用方式 GB/T 7714	Hamann, Jan,Chen, Xuelei,Xu, Yidong. Precise measurements of inflationary features with 21 cm observations[J]. PHYSICAL REVIEW D,2016,94(12).
APA	Hamann, Jan,Chen, Xuelei,&Xu, Yidong.(2016).Precise measurements of inflationary features with 21 cm observations.PHYSICAL REVIEW D,94(12).
MLA	Hamann, Jan,et al."Precise measurements of inflationary features with 21 cm observations".PHYSICAL REVIEW D 94.12(2016).