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Observational Features of Large-Scale Structures as Revealed by the Catastrophe Model of Solar Eruptions
Jun Lin
2007
Source PublicationChinese Journal of Astronomy and Astrophysics
ISSN1009-9271
Volume7Issue:4Pages:457
AbstractLarge-scale magnetic structures are the main carrier of major eruptions in the solar atmosphere. These structures are rooted in the photosphere and are driven by the unceasing motion of the photospheres material through a series of equilibrium configurations. The motion brings energy into the coronal magnetic field until the system ceases to be in equilibrium. The catastrophe theory for solar eruptions indicates that loss of mechanical equilibrium constitutes the main trigger mechanism of major eruptions, usually shown up as solar flares, eruptive prominences, and coronal mass ejections (CMEs). Magnetic reconnection which takes place at the very beginning of the eruption as a result of plasma instabilities/turbulence inside the current sheet, converts magnetic energy into heating and kinetic energy that are responsible for solar flares, and for accelerating both plasma ejecta (flows and CMEs) and energetic particles. Various manifestations are thus related to one another, and the physics behind these relationships is catastrophe and magnetic reconnection. This work reports on re- cent progress in both theoretical research and observations on eruptive phenomena showing the above manifestations. We start by displaying the properties of large-scale structures in the corona and the related magnetic fields prior to an eruption, and show various morphological features of the disrupting magnetic fields. Then, in the framework of the catastrophe theory, we look into the physics behind those features investigated in a succession of previous works, and discuss the approaches they used.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/53659
Collection中国科学院国家天文台
Affiliation中国科学院国家天文台
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jun Lin. Observational Features of Large-Scale Structures as Revealed by the Catastrophe Model of Solar Eruptions[J]. Chinese Journal of Astronomy and Astrophysics,2007,7(4):457.
APA Jun Lin.(2007).Observational Features of Large-Scale Structures as Revealed by the Catastrophe Model of Solar Eruptions.Chinese Journal of Astronomy and Astrophysics,7(4),457.
MLA Jun Lin."Observational Features of Large-Scale Structures as Revealed by the Catastrophe Model of Solar Eruptions".Chinese Journal of Astronomy and Astrophysics 7.4(2007):457.
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