Case studies of EUV cyclones and their associated magnetic fields
文献类型:期刊论文
作者 | Yu, Xin-Ting1,2; Zhang, Jun1; Li, Ting1; Yang, Shu-Hong1; Zhang Jun; Yang Shuhong; Li Ting |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
出版日期 | 2015-09-01 |
卷号 | 15期号:9页码:1525-1536 |
关键词 | Sun: activity Sun: corona Sun: magnetic fields Sun: photosphere |
英文摘要 | EUV cyclones are rotating structures in the solar corona, and they are usually rooted in the underlying rotating network magnetic fields in the photosphere. However, their connection with the surrounding magnetic fields remains unknown. Here we report an observational study of four typical cyclones which are rooted in different kinds of magnetic fields. We use Solar Dynamics Observatory/Atmospheric Imaging Assembly data to investigate the rotation of EUV features in cyclones and Helioseismic and Magnetic Imager data to study the associated magnetic fields. The results show that, (1) an EUV cyclone rooted in a sunspot rotates with the photospheric magnetic field; (2) two EUV cyclones in two faculae of an active region are connected to the same sunspot of the active region but rotate oppositely; (3) an EUV cyclone is rooted in a coronal hole with weak open magnetic fields; (4) a pair of conjugated cyclones is rooted in magnetic fields that have opposite polarity with opposite directions of rotation. The differences in the spatial extent of a cyclone, characteristics of its rotation and underlying fields indicate that cyclones are ubiquitous over the solar atmosphere and that the magnetic structures relevant to the cyclones are more complicated than expected. |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000360555100009 |
源URL | [http://ir.bao.ac.cn/handle/114a11/5601] |
专题 | 国家天文台_太阳物理研究部 |
作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China |
推荐引用方式 GB/T 7714 | Yu, Xin-Ting,Zhang, Jun,Li, Ting,et al. Case studies of EUV cyclones and their associated magnetic fields[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(9):1525-1536. |
APA | Yu, Xin-Ting.,Zhang, Jun.,Li, Ting.,Yang, Shu-Hong.,Zhang Jun.,...&Li Ting.(2015).Case studies of EUV cyclones and their associated magnetic fields.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(9),1525-1536. |
MLA | Yu, Xin-Ting,et al."Case studies of EUV cyclones and their associated magnetic fields".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.9(2015):1525-1536. |
入库方式: OAI收割
来源:国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。