期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
The Lyman-alpha Solar Telescope (LST) for the ASO-S mission——Ⅰ. Scientific objectives and overview 被引量:8
1
作者 Hui Li Bo Chen +20 位作者 Li Feng Ying Li Yu Huang Jing-Wei Li Lei Lu Jian-Chao Xue Bei-Li Ying Jie Zhao Yu-Tong Yang Wei-Qun Gan Cheng Fang Ke-Fei Song Hong Wang Quan-Feng Guo Ling-Ping He Bo Zhu Cheng Zhu Lei Deng Hai-Chao Bao Cai-Xia Cao Zhong-Guang Yang 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2019年第11期23-32,共10页
As one of the payloads for the Advanced Space-based Solar Observatory(ASO-S)mission,the Lyman-alpha(Lyα)Solar Telescope(LST)is aimed at imaging the Sun and the inner corona up to 2.5 R⊙(mean solar radius)in both the... As one of the payloads for the Advanced Space-based Solar Observatory(ASO-S)mission,the Lyman-alpha(Lyα)Solar Telescope(LST)is aimed at imaging the Sun and the inner corona up to 2.5 R⊙(mean solar radius)in both the Lyα(121.6 nm)and visible wavebands with high temporo-spatial resolution,mainly targeting solar flares,coronal mass ejections(CMEs)and filaments/prominences.LST observations allow us to trace solar eruptive phenomena from the disk center to the inner corona,to study the relationships between eruptive prominences/filaments,solar flares and CMEs,to explore the dynamical processes and evolution of solar eruptions,to diagnose solar winds,and to derive physical parameters of the solar atmosphere.LST is actually an instrument suite,which consists of a Solar Disk Imager(SDI),a Solar Corona Imager(SCI),a White-light Solar Telescope(WST)and two Guide Telescopes(GTs).This is the first paper in a series of LST-related papers.In this paper,we introduce the scientific objectives,present an overview of the LST payload and describe the planned observations.The detailed design and data along with potential diagnostics are described in the second(Paper II)and third(Paper III)papers,respectively,appearing in this issue. 展开更多
关键词 SUN flares-Sun coronal mass ejections(CMEs)-Sun filaments prominences-sun corona-Sun chromosphere-Sun UV radiation
下载PDF
Properties of filaments in solar cycle 20-23 from McIntosh Archive 被引量:1
2
作者 Rakesh Mazumder 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2019年第6期43-50,共8页
A filament is a cool, dense structure suspended in the solar corona. The eruption of a filament is often associated with a coronal mass ejection(CME), which has an adverse effect on space weather. Hence,research on fi... A filament is a cool, dense structure suspended in the solar corona. The eruption of a filament is often associated with a coronal mass ejection(CME), which has an adverse effect on space weather. Hence,research on filaments has attracted much attention in the recent past. The tilt angle of active region(AR)magnetic bipoles is a crucial parameter in the context of the solar dynamo, which governs the conversion efficiency of the toroidal magnetic field to poloidal magnetic field. Filaments always form over polarity inversion lines(PILs), so the study of tilt angles for these filaments can provide valuable information about generation of a magnetic field in the Sun. We investigate the tilt angles of filaments and other properties using McIntosh Archive data. We fit a straight line to each filament to estimate its tilt angle. We examine the variation of mean tilt angle with time. The latitude distribution of positive tilt angle filaments and negative tilt angle filaments reveals that there is a dominance of positive tilt angle filaments in the southern hemisphere and negative tilt angle filaments dominate in the northern hemisphere. We study the variation of the mean tilt angle for low and high latitudes separately. Investigations of temporal variation with filament number indicate that total filament number and low latitude filament number vary cyclically, in phase with the solar cycle. There are fewer filaments at high latitudes and they also show a cyclic pattern in temporal variation. We also study the north-south asymmetry of filaments with different latitude criteria. 展开更多
关键词 SUN filaments prominences-sun magnetic fields-Sun corona-Sun activity-(Sun:)sunspots
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部