A Study on Non-coplanar Baseline Effects for Mingantu Spectral Radioheliograph | |
Yang QP(杨秋萍)3,4,5; Wang F(王锋)2,3,5; Deng, Hui2; Mei, Ying2; Wang, Wei1 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
2022-10-01 | |
卷号 | 22期号:10 |
关键词 | instrumentation: interferometers Sun: radio radiation methods: data analysis |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/ac8b5d |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | As a dedicated solar radioheliograph, the MingantU SpEctral RadioHeliograph (MUSER) has a maximum baseline of more than 3000 m and a frequency range of 400 MHz-15 GHz. According to the classical radio interferometry theory, the non-coplanar baseline effect (i.e., w-term effect) would be considered and calibrated for such a radio instrument. However, little previous literature made the qualitative or quantitative analyses on w-term effects of solar radioheliograph in-depth. This study proposes a complete quantitative analysis of w-term effects for the MUSER. After a brief introduction of the MUSER, we systematically investigate the baseline variations over a year and analyze the corresponding variations of w-term. We further studied the effects of the w-term in the imaging for the specified extended source, i.e., the Sun. We discussed the possible effects of the w-term, such as image distortion and so on. The simulated results show that the w-term is an essential and unavoidable issue for solar radio imaging with high spatial resolution. |
学科主题 | 天文学 ; 射电天文学 ; 射电天文方法 |
URL标识 | 查看原文 |
出版地 | 20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA |
资助项目 | National SKA Program of China[2020SKA0110300] ; National Natural Science Foundation of China (NSFC)[U1831204] ; National Natural Science Foundation of China (NSFC)[U1931141] ; Chinese Academy of Sciences (CAS) ; Funds for International Cooperation and Exchange of the NSFC[11961141001] ; NSFC[11903009] |
WOS关键词 | RADIO ; DECONVOLUTION |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
WOS记录号 | WOS:000867394400001 |
资助机构 | National SKA Program of China[2020SKA0110300] ; National Natural Science Foundation of China (NSFC)[U1831204, U1931141] ; Chinese Academy of Sciences (CAS) ; Funds for International Cooperation and Exchange of the NSFC[11961141001] ; NSFC[11903009] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25593] |
专题 | 云南天文台_其他 |
通讯作者 | Wang F(王锋) |
作者单位 | 1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China 2.Center of Astrophysics, Guangzhou University, Guangzhou 510006, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China; 4.Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China; 5.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; fengwang@gzhu.edu.cn; |
推荐引用方式 GB/T 7714 | Yang QP,Wang F,Deng, Hui,et al. A Study on Non-coplanar Baseline Effects for Mingantu Spectral Radioheliograph[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2022,22(10). |
APA | Yang QP,Wang F,Deng, Hui,Mei, Ying,&Wang, Wei.(2022).A Study on Non-coplanar Baseline Effects for Mingantu Spectral Radioheliograph.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,22(10). |
MLA | Yang QP,et al."A Study on Non-coplanar Baseline Effects for Mingantu Spectral Radioheliograph".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 22.10(2022). |
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