Toward a direct measurement of the cosmic acceleration: roadmap and forecast on FAST

doi:10.1088/1475-7516/2020/01/054

NAOC Open IR

	Toward a direct measurement of the cosmic acceleration: roadmap and forecast on FAST
	Jiao, Kang 1; Zhang, Jian-Chen 1,2,3; Zhang, Tong-Jie 1,2; Yu, Hao-Ran 4; Zhu, Ming 5; Li, Di6,7
	2020
Source Publication	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN	1475-7516
Issue	1 Pages:13
Abstract	HI absorption systems are great targets for direct measurement of the Sandage-Loeb (SL) effect throughout a wide range of redshift for ground-based radio telescopes. We demonstrate the significance of improving the accuracy of SL effect measurement in cosmological model selection. With its wide sky coverage and high sensitivity, we forecast that for 1 year of the upcoming commensal survey (CRAFTS) the FAST telescope is capable of discovering about 800 HI absorption systems thereby improving the SL measurement accuracy. Aiming to measurement the cosmic redshift drift rate at the precision of <(z)over dot> similar to 10(-10) decade(-1), we propose combined observation mode with blind-searching and targeted observation. For a decade of consecutive targeted spectroscopic observation with the frequency resolution at a level of sub-0.1 Hz, we could detect the first-order derivative of the cosmological redshift with the expected precision.
Keyword	dark energy experiments intergalactic media
Funding Organization	National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program
DOI	10.1088/1475-7516/2020/01/054
WOS Keyword	REDSHIFT ; RADIO ; DECELERATION ; EVOLUTION ; UNIVERSE ; GAS
Language	英语
Funding Project	National Key R&D Program of China[2017YFA0402600] ; National Science Foundation of China[11929301] ; National Science Foundation of China[11573006] ; National Science Foundation of China[11725313] ; National Science Foundation of China[11690024] ; CAS International Partnership Program[114A11KYSB20160008]
Funding Organization	National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program
WOS Research Area	Astronomy & Astrophysics ; Physics
WOS Subject	Astronomy & Astrophysics ; Physics, Particles & Fields
WOS ID	WOS:000528025800055
Publisher	IOP PUBLISHING LTD
Citation statistics
Document Type	期刊论文
Identifier	http://ir.bao.ac.cn/handle/114a11/55072
Collection	中国科学院国家天文台
Corresponding Author	Jiao, Kang
Affiliation	1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 2.Dezhou Univ, Inst Astron Sci, Dezhou 253023, Peoples R China 3.Dezhou Univ, Coll Automot Engn, Dezhou 253023, Peoples R China 4.Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 6.Chinese Acad Sci, CAS Key Lab Fast, NAOC, Beijing 100101, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation GB/T 7714	Jiao, Kang,Zhang, Jian-Chen,Zhang, Tong-Jie,et al. Toward a direct measurement of the cosmic acceleration: roadmap and forecast on FAST[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2020(1):13.
APA	Jiao, Kang,Zhang, Jian-Chen,Zhang, Tong-Jie,Yu, Hao-Ran,Zhu, Ming,&Li, Di.(2020).Toward a direct measurement of the cosmic acceleration: roadmap and forecast on FAST.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(1),13.
MLA	Jiao, Kang,et al."Toward a direct measurement of the cosmic acceleration: roadmap and forecast on FAST".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .1(2020):13.

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