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ON THE RELATIONSHIP BETWEEN A HOT-CHANNEL-LIKE SOLAR MAGNETIC FLUX ROPE AND ITS EMBEDDED PROMINENCE
Cheng, X.; Ding, M. D.; Zhang, J.; Srivastava, A. K.; Guo, Y.; Chen, P. F.; Sun, J. Q.; Cheng, X (reprint author), Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China.
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2014
Volume789Issue:2Pages:L35
ISSN2041-8205
Language英语
KeywordSun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Magnetic Fields Sun: Filaments Prominences
AbstractA magnetic flux rope (MFR) is a coherent and helical magnetic field structure that has recently been found likely to appear as an elongated hot channel prior to a solar eruption. In this Letter, we investigate the relationship between the hot channel and the associated prominence through analysis of a limb event on 2011 September 12. In the early rise phase, the hot channel was initially cospatial with the prominence. It then quickly expanded, resulting in a separation of the top of the hot channel from that of the prominence. Meanwhile, they both experienced an instantaneous morphology transformation from a. shape to a reversed-Y shape and the top of these two structures showed an exponential increase in height. These features are a good indication of the occurrence of kink instability. Moreover, the onset of kink instability is found to coincide in time with the impulsive enhancement of flare emission underneath the hot channel, suggesting that ideal kink instability likely also plays an important role in triggering fast flare reconnection besides initiating the impulsive acceleration of the hot channel and distorting its morphology. We conclude that the hot channel is most likely the MFR system and the prominence only corresponds to the cool materials that are collected in the bottom of the helical field lines of the MFR against gravity.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4439
Collection空间科学部
Corresponding AuthorCheng, X (reprint author), Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China.
Recommended Citation
GB/T 7714
Cheng, X.,Ding, M. D.,Zhang, J.,et al. ON THE RELATIONSHIP BETWEEN A HOT-CHANNEL-LIKE SOLAR MAGNETIC FLUX ROPE AND ITS EMBEDDED PROMINENCE[J]. ASTROPHYSICAL JOURNAL LETTERS,2014,789(2):L35.
APA Cheng, X..,Ding, M. D..,Zhang, J..,Srivastava, A. K..,Guo, Y..,...&Cheng, X .(2014).ON THE RELATIONSHIP BETWEEN A HOT-CHANNEL-LIKE SOLAR MAGNETIC FLUX ROPE AND ITS EMBEDDED PROMINENCE.ASTROPHYSICAL JOURNAL LETTERS,789(2),L35.
MLA Cheng, X.,et al."ON THE RELATIONSHIP BETWEEN A HOT-CHANNEL-LIKE SOLAR MAGNETIC FLUX ROPE AND ITS EMBEDDED PROMINENCE".ASTROPHYSICAL JOURNAL LETTERS 789.2(2014):L35.
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