2000年6月
Magnetic field evolution leading to solar flares I. Cases with low magnetic shear and flux emergence
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
- ,
- ,
- ,
- 巻
- 52
- 号
- 3
- 開始ページ
- 465
- 終了ページ
- 481
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/pasj/52.3.465
- 出版者・発行元
- OXFORD UNIV PRESS
We picked up five solar flares larger than GOES X-ray class M/H alpha importance 1, and studied the magnetic evolution of the corresponding active regions. In particular, we investigated the spatial relationships among H alpha flare ribbons, soft X-ray (SXR) hare loops, and magnetic configurations. Our results show that all of these flares are not associated with high magnetic shear, but with emerging flux, indicating that flux emergence is a common phenomenon in this kind of solar flare with low magnetic shear. The maximum values of the transverse magnetic fields on the neutral lines responsible for these hares are 300-800 G. All of these flares but one have multiple (more than two) H alpha ribbons, and almost all of these ribbons are located at the footpoints of SXR flare loops. The flare-related shear changes, which can be both positive and negative, may be determined by the balance of the energy carried by the emerging flux and that required to power the flare.
- リンク情報
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- DOI
- https://doi.org/10.1093/pasj/52.3.465
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902103268791405
- CiNii Articles
- http://ci.nii.ac.jp/naid/10004678296
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000088014000008&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1093/pasj/52.3.465
- ISSN : 0004-6264
- eISSN : 2053-051X
- J-Global ID : 200902103268791405
- CiNii Articles ID : 10004678296
- Web of Science ID : WOS:000088014000008