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The fundamental performance of FAST with 19-beam receiver at L band

文献类型：期刊论文

作者Jiang, Peng1,2; Tang, Ning-Yu1,2; Hou, Li-Gang1,2; Liu, Meng-Ting1,2,3; Krco, Marko1,2; Qian, Lei1,2; Sun, Jing-Hai1,2; Ching, Tao-Chung1,2; Liu, Bin1,2; Duan, Yan1,2,3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2020-05-01
卷号20期号:5页码:28
关键词instrumentation detectors line profiles
ISSN号1674-4527
DOI10.1088/1674-4527/20/5/64
英文摘要The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has passed national acceptance and finished one pilot cycle of 'Shared-Risk' observations. It will start formal operation soon. In this context, this paper describes testing results of key fundamental parameters for FAST, aiming to provide basic support for observation and data reduction of FAST for scientific researchers. The 19-beam receiver covering 1.05-1.45 GHz was utilized for most of these observations. The fluctuation in electronic gain of the system is better than 1% over 3.5 hours, enabling enough stability for observations. Pointing accuracy, aperture efficiency and system temperature are three key parameters for FAST. The measured standard deviation of pointing accuracy is 7.9 '', which satisfies the initial design of FAST. When zenith angle is less than 26.4 degrees, the aperture efficiency and system temperature around 1.4 GHz are similar to 0.63 and less than 24 K for central beam, respectively. The sensitivity and stability of the 19-beam backend are confirmed to satisfy expectation by spectral Hi observations toward NGC 672 and polarization observations toward 3C 286. The performance allows FAST to take sensitive observations for various scientific goals, from studies of pulsars to galaxy evolution.
WOS关键词RADIO ; ARECIBO
资助项目National Key R&D Programof China[2017YFA0402701] ; National Natural Science Foundation of China (NSFC)[11673039] ; National Natural Science Foundation of China (NSFC)[11803051] ; National Natural Science Foundation of China (NSFC)[11833009] ; CAS "Light ofWest China" program ; Youth Innovation Promotion Association CAS
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000536707900001
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构National Key R&D Programof China ; National Key R&D Programof China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CAS "Light ofWest China" program ; CAS "Light ofWest China" program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Key R&D Programof China ; National Key R&D Programof China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CAS "Light ofWest China" program ; CAS "Light ofWest China" program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Key R&D Programof China ; National Key R&D Programof China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CAS "Light ofWest China" program ; CAS "Light ofWest China" program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Key R&D Programof China ; National Key R&D Programof China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; CAS "Light ofWest China" program ; CAS "Light ofWest China" program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
源URL[http://ir.bao.ac.cn/handle/114a11/54791]  
专题中国科学院国家天文台
通讯作者Jiang, Peng
作者单位1.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Peng,Tang, Ning-Yu,Hou, Li-Gang,et al. The fundamental performance of FAST with 19-beam receiver at L band[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(5):28.
APA Jiang, Peng.,Tang, Ning-Yu.,Hou, Li-Gang.,Liu, Meng-Ting.,Krco, Marko.,...&Yan, Jun.(2020).The fundamental performance of FAST with 19-beam receiver at L band.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(5),28.
MLA Jiang, Peng,et al."The fundamental performance of FAST with 19-beam receiver at L band".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.5(2020):28.

入库方式： OAI收割

来源：国家天文台

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