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The role of spiral sunspots in the solar activity of October 1972
Ding YJ(丁有济); Li WB(李维宝); Wu MC(吴铭蟾); Jiang ZZ(蒋治中); Hong QF(洪琴芳); Liu ZZ(刘子忠); YOUJI, D
Source PublicationCHINESE ASTRONOMY
1978
Volume2Issue:2Pages:218-237
DOI10.1016/0146-6364(78)90018-X
Contribution Rank第1完成单位
Indexed BySCI
AbstractFrom a collection of photographs of 192 knots relating to 68 flares of the activity region McMath 12094 of October 1972, and of spots and prominences, a correlation analysis was made which led to the following conclusions: 1.1. Flare activity began in the region above the leader spot A(N) which had the highest twisted magnetic energy of all the spots in the group. It rapidly developed to the region above the follower S-spots, and then to regions outside the spot area. This evolutionary process was in step with the morphological changes and the rotational movement of the spots in the group. 2.2. The flare activity around Spot A began in the interior of the twisted magnetic tube and was in step with the untwisting of magnetic features, and the flare knots spread from the vicinity of the umbra to the outside of the penumbra. When the knotted structure completely untwisted itself, the overall flare activity decreased in the region. 3.3. A spiral spot was found to be a strong centre of attraction below a giant coronal prominence. This shows that coronal prominences are formed through the contraction of strong electrical currents in the corona. We also discussed the question whether the twisted magnetic structure of spot A could have provided most of the energy in the flare activity and lead to an instability.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0146-6364
URL查看原文
WOS IDWOS:A1978GQ02700005
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5991
Collection太阳物理研究组
Corresponding AuthorYOUJI, D
AffiliationYunnan Observatory, Academia Sinica, China
Recommended Citation
GB/T 7714
Ding YJ,Li WB,Wu MC,et al. The role of spiral sunspots in the solar activity of October 1972[J]. CHINESE ASTRONOMY,1978,2(2):218-237.
APA Ding YJ.,Li WB.,Wu MC.,Jiang ZZ.,Hong QF.,...&YOUJI, D.(1978).The role of spiral sunspots in the solar activity of October 1972.CHINESE ASTRONOMY,2(2),218-237.
MLA Ding YJ,et al."The role of spiral sunspots in the solar activity of October 1972".CHINESE ASTRONOMY 2.2(1978):218-237.
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