A fundamental mechanism of solar eruption initiation

被引:121
作者
Jiang, Chaowei [1 ]
Feng, Xueshang [1 ]
Liu, Rui [2 ,3 ]
Yan, XiaoLi [4 ]
Hu, Qiang [5 ,6 ]
Moore, Ronald L. [5 ]
Duan, Aiying [7 ]
Cui, Jun [7 ]
Zuo, Pingbing [1 ]
Wang, Yi [1 ]
Wei, Fengsi [1 ]
机构
[1] Harbin Inst Technol, Inst Space Sci & Appl Technol, Shenzhen, Peoples R China
[2] Univ Sci & Technol China, Chinese Acad Sci Key Lab Geospace Environm, Dept Geophys & Planetary Sci, Hefei, Peoples R China
[3] Univ Sci & Technol China, Chinese Acad Sci Ctr Excellence Comparat Planetol, Hefei, Peoples R China
[4] Chinese Acad Sci, Yunnan Observ, Kunming, Yunnan, Peoples R China
[5] Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35899 USA
[6] Univ Alabama, Dept Space Sci, Huntsville, AL USA
[7] Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai, Peoples R China
基金
中国国家自然科学基金;
关键词
CORONAL MASS EJECTION; MAGNETIC-FIELD; FLUX ROPES; FILAMENT ERUPTIONS; RECONNECTION; EVOLUTION; MODEL; ENERGY; MOTION; CME;
D O I
10.1038/s41550-021-01414-z
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Fully three-dimensional magnetohydrodynamic simulations show that solar eruptions can be simply and efficiently initiated in a single bipolar configuration through photospheric shearing motion alone, without the need of any additional special topology. Solar eruptions are spectacular magnetic explosions in the Sun's corona, and how they are initiated remains unclear. Prevailing theories often rely on special magnetic topologies that may not generally exist in the pre-eruption source region of corona. Here, using fully three-dimensional magnetohydrodynamic simulations with high accuracy, we show that solar eruptions can be initiated in a single bipolar configuration with no additional special topology. Through photospheric shearing motion alone, an electric current sheet forms in the highly sheared core field of the magnetic arcade during its quasi-static evolution. Once magnetic reconnection sets in, the whole arcade is expelled impulsively, forming a fast-expanding twisted flux rope with a highly turbulent reconnecting region underneath. The simplicity and efficacy of this scenario argue strongly for its fundamental importance in the initiation of solar eruptions.
引用
收藏
页码:1126 / +
页数:18
相关论文
共 84 条
[11]   The writhe of open and closed curves [J].
Berger, Mitchell A. ;
Prior, Chris .
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2006, 39 (26) :8321-8348
[12]   Fast reconnection in high-Lundquist-number plasmas due to the plasmoid Instability [J].
Bhattacharjee, A. ;
Huang, Yi-Min ;
Yang, H. ;
Rogers, B. .
PHYSICS OF PLASMAS, 2009, 16 (11) :112102
[13]   Observations of rotating sunspots from TRACE [J].
Brown, DS ;
Nightingale, RW ;
Alexander, D ;
Schrijver, CJ ;
Metcalf, TR ;
Shine, RA ;
Title, AM ;
Wolfson, CJ .
SOLAR PHYSICS, 2003, 216 (1-2) :79-108
[14]   Coronal Mass Ejections: Models and Their Observational Basis [J].
Chen, P. F. .
LIVING REVIEWS IN SOLAR PHYSICS, 2011, 8 (01)
[15]   Initiation and Early Kinematic Evolution of Solar Eruptions [J].
Cheng, X. ;
Zhang, J. ;
Kliem, B. ;
Torok, T. ;
Xing, C. ;
Zhou, Z. J. ;
Inhester, B. ;
Ding, M. D. .
ASTROPHYSICAL JOURNAL, 2020, 894 (02)
[16]   Evolution of solar magnetic arcades .1. Ideal MHD evolution under footpoint shearing [J].
Choe, GS ;
Lee, LC .
ASTROPHYSICAL JOURNAL, 1996, 472 (01) :360-371
[17]  
Daughton W, 2011, NAT PHYS, V7, P539, DOI [10.1038/NPHYS1965, 10.1038/nphys1965]
[18]   Three-dimensional magnetic reconnection without null points .2. Application to twisted flux tubes [J].
Demoulin, P ;
Priest, ER ;
Lonie, DP .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1996, 101 (A4) :7631-7646
[19]   Homologous confined filament eruptions via magnetic breakout [J].
DeVore, C. Richard ;
Antiochos, Spiro K. .
ASTROPHYSICAL JOURNAL, 2008, 680 (01) :740-756
[20]   Dynamical formation and stability of helical prominence magnetic fields [J].
DeVore, CR ;
Antiochos, SK .
ASTROPHYSICAL JOURNAL, 2000, 539 (02) :954-963