The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - III.data and potential diagnostics

doi:10.1088/1674-4527/19/11/162

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	The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - III.data and potential diagnostics
	L.Feng; H.Li; B.Chen; Y.Li; R.Susino; Y.Huang; L.Lu; B.L.Ying
	2019
发表期刊	Research in Astronomy and Astrophysics
ISSN	1674-4527
卷号	19 期号:11 页码:14
摘要	The Lyman-alpha Solar Telescope (LST) is one of the three payloads onboard the Advanced Space-based Solar Observatory (ASO-S) mission. It aims at imaging the Sun from the disk center up to 2.5R(circle dot) targeting solar eruptions, particularly coronal mass ejections (CMEs), solar flares, prominences/filaments and related phenomena, as well as the fast and slow solar wind. The most prominent speciality of LST is the simultaneous observation of the solar atmosphere in both Ly alpha and white light (WL) with high temporospatial resolution both on the solar disk and the inner corona. New observations in the Ly alpha line together with traditional WL observations will provide us with many new insights into solar eruptions and solar wind. LST consists of a Solar Corona Imager (SCI) with a field of view (FOV) of 1.1 - 2.5R(circle dot), a Solar Disk Imager (SDI) and a full-disk White-light Solar Telescope (WST) with an identical FOV up to 1.2R(circle dot). SCI has a dual waveband in Ly alpha (121.6 +/- 10 nm) and in WL (700 +/- 40 nm), while SDI works in the Ly alpha waveband of 121.6 +/- 7.5 nm and WST works in the violet narrow-band continuum of 360 +/- 2.0 nm. To produce high quality science data, careful ground and in-flight calibrations are required. We present our methods for different calibrations including dark field correction, flat field correction, radiometry, instrumental polarization and optical geometry. Based on the data calibration, definitions of the data levels and processing procedures for the defined levels from raw data are described. Plasma physical diagnostics offer key ingredients to understand ejecta and plasma flows in the inner corona, as well as different features on the solar disk including flares, filaments, etc. Therefore, we are making efforts to develop various tools to detect the different features observed by LST, and then to derive their physical parameters, for example, the electron density and temperature of CMEs, the outflow velocity of the solar wind, and the hydrogen density and mass flows of prominences. Coordinated observations and data analyses with the coronagraphs onboard Solar Orbiter, PROBA-3, and Aditya are also briefly discussed.
关键词	radiative-transfer,coronagraph,sumer,Astronomy & Astrophysics
DOI	10.1088/1674-4527/19/11/162
URL	查看原文
收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63396
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	L.Feng,H.Li,B.Chen,et al. The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - III.data and potential diagnostics[J]. Research in Astronomy and Astrophysics,2019,19(11):14.
APA	L.Feng.,H.Li.,B.Chen.,Y.Li.,R.Susino.,...&B.L.Ying.(2019).The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - III.data and potential diagnostics.Research in Astronomy and Astrophysics,19(11),14.
MLA	L.Feng,et al."The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - III.data and potential diagnostics".Research in Astronomy and Astrophysics 19.11(2019):14.

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