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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Journal ArticleDOI
A coronal mass ejection and hard x-ray emissions associated with the kink instability
TL;DR: In this paper, a morphological study of the 2004 August 18 solar eruption was performed using extreme-ultraviolet (EUV) data from the Transition Region and Coronal Explorer (TRACE), Halpha filtergram of Big Bear Solar Observatory, white light images of Mauna Loa Solar Observatory (MLSO), hard X-ray (HXR) data of the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI), and microwave data of Owens Valley Solar Array.
Journal ArticleDOI
The solar magnetic field and coronal dynamics of the eruption on 2007 may 19
Yuan Li,Benjamin J. Lynch,Guillermo Stenborg,Janet G. Luhmann,K. E. Huttunen,K. E. Huttunen,Brian T. Welsch,Paulett C. Liewer,Angelos Vourlidas +8 more
TL;DR: The solar eruption on 2007 May 19, from AR 10956 near the solar disk center, consisted of a B9.5 flare (12:48 UT), a filament eruption, an EUV dimming, a coronal wave, and a multifront CME as discussed by the authors.
Journal ArticleDOI
Two-plasma model for low charge state interplanetary coronal mass ejection observations
TL;DR: In this article, a detailed and multi-stage analysis of the elemental composition of prominence-associated plasma is presented, showing that very low charge states are the heliospheric remnants of plasmas born in prominences.
Journal ArticleDOI
Solar cycle variations of coronal null points: implications for the magnetic breakout model of coronal mass ejections
TL;DR: In this paper, the authors investigate the solar cycle variation of coronal null points and magnetic breakout configurations in spherical geometry, using a combination of magnetic flux transport and potential field source surface models.
Journal ArticleDOI
Two Episodes of Magnetic Reconnections During a Confined Circular-ribbon Flare
TL;DR: In this paper, a unique event with an M1.8 confined circular-ribbon flare on 2016 February 13, with successive formations of two circular ribbons at the same location was analyzed.
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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.
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