Journal ArticleDOI
A Model for Solar Coronal Mass Ejections
TLDR
In this article, a magnetic breakout model for the initiation of a solar coronal mass ejection (CME) was proposed, where reconnection between a sheared arcade and neighboring flux systems triggers the eruption.Abstract:
We propose a new model for the initiation of a solar coronal mass ejection (CME). The model agrees with two properties of CMEs and eruptive flares that have proved to be very difficult to explain with previous models: (1) very low-lying magnetic field lines, down to the photospheric neutral line, can open toward infinity during an eruption; and (2) the eruption is driven solely by magnetic free energy stored in a closed, sheared arcade. Consequently, the magnetic energy of the closed state is well above that of the posteruption open state. The key new feature of our model is that CMEs occur in multipolar topologies in which reconnection between a sheared arcade and neighboring flux systems triggers the eruption. In this "magnetic breakout" model, reconnection removes the unsheared field above the low-lying, sheared core flux near the neutral line, thereby allowing this core flux to burst open. We present numerical simulations that demonstrate our model can account for the energy requirements for CMEs. We discuss the implication of the model for CME/flare prediction.read more
Citations
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The Lyman-alpha Solar Telescope (LST) for the ASO-S mission — I. Scientific objectives and overview
Hui Li,Hui Li,Bo Chen,Li Feng,Li Feng,Ying Li,Ying Li,Yu Huang,Yu Huang,Jing-Wei Li,Jing-Wei Li,Lei Lu,Lei Lu,Jian-Chao Xue,Jian-Chao Xue,Beili Ying,Beili Ying,Jie Zhao,Jie Zhao,Yu-Tong Yang,Yu-Tong Yang,Weiqun Gan,Weiqun Gan,Cheng Fang,Song Kefei,Hong Wang,Quan-Feng Guo,He Lingping,Bo Zhu,Cheng Zhu,Lei Deng,Hai-Chao Bao,Cai-Xia Cao,Zhong-Guang Yang +33 more
Journal ArticleDOI
Numerical simulation of fast-mode magnetosonic waves excited by plasmoid ejections in the solar corona
Liping Yang,Liping Yang,Lei Zhang,Jiansen He,Hardi Peter,Chuanyi Tu,Linghua Wang,Shaohua Zhang,Xueshang Feng +8 more
TL;DR: In this article, the authors performed a numerical investigation of the excitation of FMWs in the interchange reconnection scenario, with footpoint shearing flow being used to energize the system and drive the reconnection.
Journal ArticleDOI
Reconstructing the 3-D Trajectories of CMEs in the Inner Heliosphere
TL;DR: In this paper, a method for the full 3D reconstruction of the trajectories of coronal mass ejections (CMEs) using solar TErrestrial Relations Observatory (STEREO) data is presented.
Journal ArticleDOI
Filament Eruption in NOAA 11093 Leading to a Two-Ribbon M1.0 Class Flare and CME
TL;DR: In this article, a multi-wavelength analysis of an eruption event that occurred in active region NOAA 11093 on 7 August 2010, using data obtained from SDO, STEREO, RHESSI, and the GONG Hα network telescope is presented.
Journal ArticleDOI
Solar Magnetic Flux Rope Eruption Simulated by a Data-driven Magnetohydrodynamic Model
TL;DR: In this article, the authors developed a data-driven MHD model using the zero-and-beta-approximation, and applied the model to active region 11123 observed from 06:00 UT on 2011 November 11 to about 2 hours later.
References
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Journal ArticleDOI
The solar flare myth
TL;DR: In this paper, the authors outline a different paradigm of cause and effect that removes solar flares from their central position in the chain of events leading from the Sun to near-Earth space.
Journal ArticleDOI
Disruption of Coronal Magnetic Field Arcades
Zoran Mikic,Jon A. Linker +1 more
TL;DR: In this paper, the magnetic field expands outward in a process that opens the field lines and produces a tangential discontinuity, leading to an impulsive release of magnetic energy, fast flows, and the ejection of a plasmoid.
Journal ArticleDOI
Coronal mass ejections - 1979-1981
TL;DR: An overview of observations of coronal mass ejections (CMEs) during the interval March 28, 1979 through December 31, 1981 is presented in this paper, where an introduction is provided to the instrument used in the observations, the method of identifying CMEs, the concepts of CME structural classes, CME importance categories, and the distribution of mass ejection among these classes and categories.
Journal ArticleDOI
On some properties of force-free magnetic fields in infinite regions of space
TL;DR: In this article, a priori inequalities are defined which must be satisfied by the force-free equations, and upper bounds for the magnetic energy of the region provided the value of the magnetic normal component at the boundary of a region can be shown to decay sufficiently fast at infinity.
Journal ArticleDOI
Force-free magnetic fields - The magneto-frictional method
TL;DR: In this article, a magneto-frictional method was proposed to calculate magnetic field configurations in which the Lorentz force j x B is everywhere zero, subject to specified boundary conditions.
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