NSSC OpenIR  > 空间科学部
Magnetohydrodynamic Simulation of the X9.3 Flare on 2017 September 6: Evolving Magnetic Topology
Jiang, Chaowei; Zou, Peng; Feng, Xueshang; Hu, Qiang; Liu, Rui; Vemareddy, P.; Duan, Aiying; Zuo, Pingbing; Wang, Yi; Wei, Fengsi
Keywordmagnetic fields magnetohydrodynamics (MHD) methods: numerical Sun: corona Sun: flares
AbstractThree-dimensional magnetic topology is crucial to understanding the explosive release of magnetic energy in the corona during solar flares. Much attention has been given to the pre-flare magnetic topology to identify candidate sites of magnetic reconnection, yet it is unclear how the magnetic reconnection and its attendant topological changes shape the eruptive structure and how the topology evolves during the eruption. Here we employed a realistic, data-constrained magnetohydrodynamic simulation to study the evolving magnetic topology for an X9.3 eruptive flare that occurred on 2017 September 6. The simulation successfully reproduces the eruptive features and processes in unprecedented detail. The numerical results reveal that the pre-flare corona contains multiple twisted flux systems with different connections, and during the eruption these twisted fluxes form a coherent flux rope through tether-cutting-like magnetic reconnection below the rope. Topological analysis shows that the rising flux rope is wrapped by a quasi-separatrix layer, which intersects itself below the rope, forming a topological structure known as a hyperbolic flux tube, where a current sheet develops, triggering the reconnection. By mapping footpoints of the newly reconnected field lines, we are able to reproduce both the spatial location and, for the first time, the temporal separation of the observed flare ribbons, as well as the dynamic boundary of the flux rope's feet. Furthermore, the temporal profile of the total reconnection flux is comparable to the soft X-ray light curve. Such a sophisticated characterization of the evolving magnetic topology provides important insight into the eventual understanding and forecasting of solar eruptions.
Indexed BySCI
Citation statistics
Document Type期刊论文
Recommended Citation
GB/T 7714
Jiang, Chaowei,Zou, Peng,Feng, Xueshang,et al. Magnetohydrodynamic Simulation of the X9.3 Flare on 2017 September 6: Evolving Magnetic Topology[J]. ASTROPHYSICAL JOURNAL,2018,869(1):13.
APA Jiang, Chaowei.,Zou, Peng.,Feng, Xueshang.,Hu, Qiang.,Liu, Rui.,...&Wei, Fengsi.(2018).Magnetohydrodynamic Simulation of the X9.3 Flare on 2017 September 6: Evolving Magnetic Topology.ASTROPHYSICAL JOURNAL,869(1),13.
MLA Jiang, Chaowei,et al."Magnetohydrodynamic Simulation of the X9.3 Flare on 2017 September 6: Evolving Magnetic Topology".ASTROPHYSICAL JOURNAL 869.1(2018):13.
Files in This Item:
File Name/Size DocType Version Access License
2018869113.pdf(19573KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jiang, Chaowei]'s Articles
[Zou, Peng]'s Articles
[Feng, Xueshang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jiang, Chaowei]'s Articles
[Zou, Peng]'s Articles
[Feng, Xueshang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jiang, Chaowei]'s Articles
[Zou, Peng]'s Articles
[Feng, Xueshang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.