Zhang Guiqing; Tian Lirong
Source Publicationchinesejournalofastronomyandastrophysics
AbstractA long-lived sunspot group (AR 9604) on the south hemisphere that lasted five solar rotations and produced some strong bursts is analyzed. The focus is on its evolving features. Its. whole life was successfully maintained by four Emerging Flux Regions (EFRs). Apart from the one that lasted only a short time and did not produce any bursts, the other three EFRs have the following common features: (1) A positive writhe of magnetic flux tubes and a twist of the field lines of the same sign, indicating kink instability. (2) A clockwise rotation and a high tilt because the writhe was right-handed. (3) A compact "island delta" structure of the sunspot group indicating concentrated kink instability. Since magnetic reconnection easily occurs at the kinked point of a very kink-unstable flux tube, these features should be the inducement of the strong bursts.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang Guiqing,Tian Lirong. evolutionofalonglivedsunspotgroupanditsassociatedsolarterrestrialevents[J]. chinesejournalofastronomyandastrophysics,2005,5(1):77.
APA Zhang Guiqing,&Tian Lirong.(2005).evolutionofalonglivedsunspotgroupanditsassociatedsolarterrestrialevents.chinesejournalofastronomyandastrophysics,5(1),77.
MLA Zhang Guiqing,et al."evolutionofalonglivedsunspotgroupanditsassociatedsolarterrestrialevents".chinesejournalofastronomyandastrophysics 5.1(2005):77.
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