Journal ArticleDOI
The Torus instability
Bernhard Kliem,Tibor Torok +1 more
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In this paper, the expansion instability of a toroidal current ring in low-beta magnetized plasma is investigated, and the results are verified with experiments on spheromak expansion and with essential properties of solar coronal mass ejections.Abstract:
The expansion instability of a toroidal current ring in low-beta magnetized plasma is investigated. Qualitative agreement is obtained with experiments on spheromak expansion and with essential properties of solar coronal mass ejections, unifying the two apparently disparate classes of fast and slow coronal mass ejections.read more
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Journal ArticleDOI
Kinematics of coronal mass ejections in the LASCO field of view
TL;DR: In this article, the authors present a statistical study of the kinematics of 28894 coronal mass ejections (CMEs) recorded by the Large Angle and Spectrometric Coronagraph (LASCO) on board the Solar and Heliospheric Observatory spacecraft from 1996 until mid-2017.
Journal ArticleDOI
Quantifying the Toroidal Flux of Pre-existing Flux Ropes of CMEs
TL;DR: In this article, a quasi-2D reconnection model was proposed to estimate the toroidal flux of the pre-existing flux rope by subtracting the flux contributed by magnetic reconnection during the eruption from the flux measured in the magnetic clouds near the Earth.
Journal ArticleDOI
Observations of the Coronal Mass Ejection with a Complex Acceleration Profile
TL;DR: In this paper, the authors studied the coronal mass ejection (CME) with a complex acceleration profile and found that CMEs are complex phenomena that cannot be explained with only one acceleration mechanism.
Journal ArticleDOI
κH-Mechanism of a Solar Eruption Produced Self-Consistently by Flux Emergence
TL;DR: In this paper, a new magnetohydrodynamic simulation for the sequence evolution of a magnetic field from emergence to eruption on the Sun is presented, which highlights a possible eruption mechanism inherent in the dynamic nature of the emerging magnetic field.
Journal ArticleDOI
An Observationally-Constrained Model of a Flux Rope that Formed in the Solar Corona
Alexander W. James,Gherardo Valori,Lucie M. Green,Yang Liu,Mark C. M. Cheung,Yang Guo,Lidia van Driel-Gesztelyi,Lidia van Driel-Gesztelyi,Lidia van Driel-Gesztelyi +8 more
TL;DR: In this paper, the authors used data from the Solar Dynamics Observatory to model the coronal magnetic field of the active region one hour prior to eruption using a nonlinear force-free field extrapolation, and find a flux rope reaching a maximum height of 150 Mm above the photosphere.
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