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
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Journal ArticleDOI
Physical Processes Involved in the EUV “Surge” Event of 9 May 2012
Marcelo Lopez Fuentes,Cristina Hemilse Mandrini,Cristina Hemilse Mandrini,Mariano Poisson,Pascal Démoulin,G. Cristiani,G. Cristiani,Fernando M. López,M. L. Luoni +8 more
TL;DR: Fuentes, Lopez Fuentes and Claudio as mentioned in this paper presented the work of the Consejo Nacional de Investigaciones Cientificas and Tecnicas (CICTE) and the Instituto de Astronomia y Fisica del Espacio (IOFES).
Journal ArticleDOI
Dynamics of an Erupting Arched Magnetic Flux Rope in a Laboratory Plasma Experiment
TL;DR: In this article, a laboratory plasma experiment has been built to study the eruption of arched magnetic flux ropes (AMFRs) in the presence of a large magnetized plasma.
Journal ArticleDOI
Destabilization of a Solar Prominence/Filament Field System by a Series of Eight Homologous Eruptive Flares
TL;DR: In this article, a series of at least eight homologous flares occurred in active region NOAA 11237 over 16 - 17 June 2011, and each of the eruptions was mainly confined, but expelled hot material into the prominence/filament cavity system (PFCS).
Journal ArticleDOI
Twisting/Swirling Motions during a Prominence Eruption as Seen from SDO/AIA
Vaibhav Pant,A. Datta,A. Datta,Dipankar Banerjee,Dipankar Banerjee,K. Chandrashekhar,K. Chandrashekhar,S. Ray +7 more
TL;DR: In this article, a quiescent prominence was observed at the northwest limb of the Sun using different channels of the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory, and the prominence erupted asymmetrically near the southern footpoint, which may be due to an uneven mass distribution and location of the cavity near the south footpoint.
Journal ArticleDOI
Two energy release processes for CMEs: MHD catastrophe and magnetic reconnection
TL;DR: In this article, the authors investigated the role of magnetic reconnection in the magnetic energy release associated with coronal mass ejections (CMEs) and flares in the solar corona.
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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