NSSC OpenIR
Discovering the sky at the longest wavelengths with a lunar orbit array
Alternative TitleWOS:000595659000015
Chen, Xuelei; Yan, Jingye1; Deng, Li1; Wu, Fengquan; Wu, Lin1; Xu, Yidong; Zhou, Li1
Source PublicationPHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
2021
Volume379Issue:2188Pages:20190566
DOI10.1098/rsta.2019.0566
ISSN1364-503X
Language英语
Keywordlunar astronomy radio astronomy dark ages-EMISSION
AbstractDue to ionosphere absorption and the interference of natural and artificial radio emissions, astronomical observation from the ground becomes very difficult at the wavelengths of decametre or longer, which we shall refer to as the ultralong wavelengths. This unexplored part of the electromagnetic spectrum has the potential for great discoveries, notably in the study of cosmic dark ages and dawn, but also in heliophysics and space weather, planets and exoplanets, cosmic ray and neutrinos, pulsar and interstellar medium (ISM), extragalactic radio sources, and so on. The difficulty of the ionosphere can be overcome by space observation, and the Moon can shield the radio frequency interferences (RFIs) from the Earth. A lunar orbit array can be a practical first step to opening up the ultralong wave band. Compared with a lunar surface observatory on the far side, the lunar orbit array is simpler and more economical, as it does not need to make the risky and expensive landing, can be easily powered with solar energy, and the data can be transmitted back to the Earth when it is on the near-side part of the orbit. Here, I describe the discovering sky at the longest wavelength (DSL) project, which will consist of a mother satellite and 6-9 daughter satellites, flying on the same circular orbit around the Moon, and forming a linear interferometer array. The data are collected by the mother satellite which computes the interferometric cross-correlations (visibilities) and transmits the data back to the Earth. The whole array can be deployed on the lunar orbit with a single rocket launch. The project is under intensive study in China. This article is part of a discussion meeting issue 'Astronomy from the Moon: the next decades'.
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7534
Collection中国科学院国家空间科学中心
Affiliation1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen, Xuelei,Yan, Jingye,Deng, Li,et al. Discovering the sky at the longest wavelengths with a lunar orbit array[J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,2021,379(2188):20190566.
APA Chen, Xuelei.,Yan, Jingye.,Deng, Li.,Wu, Fengquan.,Wu, Lin.,...&Zhou, Li.(2021).Discovering the sky at the longest wavelengths with a lunar orbit array.PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,379(2188),20190566.
MLA Chen, Xuelei,et al."Discovering the sky at the longest wavelengths with a lunar orbit array".PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 379.2188(2021):20190566.
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