Eruption of Solar Magnetic Flux Ropes Caused by Flux Feeding
Alternative TitleWOS:000553511900001
Zhang, Quanhao1,2,3; Wang, Yuming2,3; Liu, Rui2,4; Zhang, Jie5; Hu, Youqiu; Wang, Wensi2,3; Zhuang, Bin3; Li, Xiaolei3
KeywordSolar prominences Solar filaments Solar flares Solar magnetic flux emergence Solar coronal mass ejections Solar filament eruptions CORONAL MASS EJECTIONS MODEL RECONNECTION MECHANISM ONSET EVOLUTION
AbstractLarge-scale solar eruptions are believed to have a magnetic flux rope as the core structure. However, it remains elusive as to how the flux rope builds up and what triggers its eruption. Recent observations found that a prominence erupted following multiple episodes of flux feeding. During each episode, a chromospheric fibril rose and merged with the prominence lying above. In this Letter, we carried out 2.5-dimensional magnetohydrodynamic (MHD) numerical simulations to investigate whether the flux-feeding mechanism can explain such an eruption. The simulations demonstrate that the discrete emergence of small flux ropes can initiate eruptions by feeding axial flux into the preexistent flux rope until its total axial flux reaches a critical value. The onset of the eruption is dominated by an ideal MHD process. Our simulation results corroborate that the flux feeding is a viable mechanism to cause the eruption of solar magnetic flux ropes.
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Document Type期刊论文
Affiliation1.Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China
2.Chinese Acad Sci, State Key Lab Space Weather, Beijing 100190, Peoples R China
3.Univ Sci & Technol China, CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China
4.Univ Sci & Technol China, Sch Earth & Space Sci, Mengcheng Natl Geophys Observ, Hefei 230026, Peoples R China
5.Collaborat Innovat Ctr Astronaut Sci & Technol, Hefei 230026, Anhui, Peoples R China
6.George Mason Univ, Dept Phys & Astron, 4400 Univ Dr,MSN 3F3, Fairfax, VA 22030 USA
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Zhang, Quanhao,Wang, Yuming,Liu, Rui,et al. Eruption of Solar Magnetic Flux Ropes Caused by Flux Feeding[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,898(1):L12.
APA Zhang, Quanhao.,Wang, Yuming.,Liu, Rui.,Zhang, Jie.,Hu, Youqiu.,...&Li, Xiaolei.(2020).Eruption of Solar Magnetic Flux Ropes Caused by Flux Feeding.ASTROPHYSICAL JOURNAL LETTERS,898(1),L12.
MLA Zhang, Quanhao,et al."Eruption of Solar Magnetic Flux Ropes Caused by Flux Feeding".ASTROPHYSICAL JOURNAL LETTERS 898.1(2020):L12.
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