NAOC Open IR  > 月球与深空探测研究部
A catastrophic flux rope in a quadrupole magnetic field for coronal mass ejections
Zhang, Y.-Z.; Wang, J.-X.
2007-07-01
Source PublicationASTROPHYSICAL JOURNAL
Volume663Issue:1Pages:592-597
AbstractWe propose a flux-rope model for the initiation of flare-associated CMEs. The model triggers the eruption with a catastrophic loss of MHD equilibrium and then requires magnetic reconnection to sustain the eruption's acceleration. We carry out 2.5-dimensional time-dependent resistive MHD simulations, choosing the initial state such that a flux rope embedded in a quadrupole field is attached to the solar surface; we then increase the magnetic flux of the rope by two different amounts, thus obtaining two cases. One exhibits a gradual acceleration of the flux rope, whereas the other produces an immediate acceleration. In both cases, the maximum speed of the flux rope is representative of a fast CME. Thus, we conclude that the flux-rope dynamics depends on the intensity of the emergent magnetic flux. Our model does reproduce the three-component structure of CMEs.
KeywordSun : Corona Sun : Coronal Mass Ejections (Cmes) Sun : Flares Sun : Magnetic Fields
Indexed BySCI
Language英语
WOS IDWOS:000247542700050
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8966
Collection月球与深空探测研究部
AffiliationChinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Y.-Z.,Wang, J.-X.. A catastrophic flux rope in a quadrupole magnetic field for coronal mass ejections[J]. ASTROPHYSICAL JOURNAL,2007,663(1):592-597.
APA Zhang, Y.-Z.,&Wang, J.-X..(2007).A catastrophic flux rope in a quadrupole magnetic field for coronal mass ejections.ASTROPHYSICAL JOURNAL,663(1),592-597.
MLA Zhang, Y.-Z.,et al."A catastrophic flux rope in a quadrupole magnetic field for coronal mass ejections".ASTROPHYSICAL JOURNAL 663.1(2007):592-597.
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