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Concept of an Experimental Ultralong-Wavelength Radio Array

文献类型：期刊论文

作者Chen, Linjie1; Yan, Yihua1,2
刊名RADIO SCIENCE
出版日期2019-07-01
卷号54期号:7页码:660-670
关键词ultralong wavelengths radio array radio astronomy
ISSN号0048-6604
DOI10.1029/2019RS006806
英文摘要The Ultralong-Wavelength (ULW) regime of longer than 10m (corresponding to frequencies below 30MHz) remains as the last virtually unexplored window in radio astronomy and is presently attracting considerable attention as an area of potentially rewarding studies. However, the opaqueness of the Earth's ionosphere makes the ULW celestial radio emission very difficult to detect with ground-based instrumentation. The impact of the ionosphere on ULW radio emission depends on the solar cycle activities and varies with time. In addition, the ULW spectrum region is densely populated by intensive artificial radio frequency interference. An obvious solution of these problems is to place an ULW radio telescope in space. However, this solution is expensive and poses nonnegligible technological challenges. An alternative approach is triggered by recent studies showing that the period of post 2020 will be most suitable for exploratory ground-based ULW radio observations due to the expected calm state of the ionosphere; the ionospheric cutoff frequency could be well below 10MHz, even in the day time. In anticipation of this upcoming opportunity, we propose and present in this paper a concept of an experimental ULW radio array, with the intention of setting it up in Inner Mongolia, China. This ULW facility will use the infrastructure of the currently operational Mingantu spectral radio heliograph. The proposed ULW array covers the frequency range from 1 to 72MHz. This experimental array will be used for exploratory studies of celestial radio emission in the ULW range of the spectrum.
WOS关键词LOFAR
资助项目National Natural Science Foundation of China (NSFC)[11573043] ; National Natural Science Foundation of China (NSFC)[11203042] ; National Natural Science Foundation of China (NSFC)[11790305] ; National Natural Science Foundation of China (NSFC)[11433006] ; National Astronomical Observatories, Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences ; Remote Sensing ; Telecommunications
语种英语
WOS记录号WOS:000480786900012
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences
源URL[http://ir.bao.ac.cn/handle/114a11/27387]  
专题中国科学院国家天文台
通讯作者Chen, Linjie
作者单位1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Linjie,Yan, Yihua. Concept of an Experimental Ultralong-Wavelength Radio Array[J]. RADIO SCIENCE,2019,54(7):660-670.
APA Chen, Linjie,&Yan, Yihua.(2019).Concept of an Experimental Ultralong-Wavelength Radio Array.RADIO SCIENCE,54(7),660-670.
MLA Chen, Linjie,et al."Concept of an Experimental Ultralong-Wavelength Radio Array".RADIO SCIENCE 54.7(2019):660-670.

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