MHD Equilibria and Triggers for Prominence Eruption
arXiv:1512.08044 · doi:10.1007/978-3-319-10416-4_12
Abstract
Magneto-hydrodynamic (MHD) simulations of the emergence of twisted magnetic flux tubes from the solar interior into the corona are discussed to illustrate how twisted and sheared coronal magnetic structures (with free magnetic energy), capable of driving filament eruptions, can form in the corona in emerging active regions. Several basic mechanisms that can disrupt the quasi-equilibrium coronal structures and trigger the release of the stored free magnetic energy are discussed. These include both ideal processes such as the onset of the helical kink instability and the torus instability of a twisted coronal flux rope structure and the non-ideal process of the onset of fast magnetic reconnections in current sheets. Representative MHD simulations of the non-linear evolution involving these mechanisms are presented.
26 pages, 10 figures, Chapter 12 of Solar Prominences, Astrophysics and Space Science Library, Volume 415. ISBN 978-3-319-10415-7. Springer International Publishing Switzerland, 2015, p. 297
References in corpus (10)
- Torus instability
- Ideal kink instability of a magnetic loop equilibrium
- Driving major solar flares and eruptions: a review
- Generalized Squashing Factors for Covariant Description of Magnetic Connectivity in the Solar Corona
- Numerical simulations of fast and slow coronal mass ejections
- Emergence of a Helical Flux Rope Under an Active Region Prominence
- A catastrophe model for fast magnetic reconnection onset
- Simulations of Emerging Magnetic Flux. I: The Formation of Stable Coronal Flux Ropes
- Simulation of homologous and cannibalistic Coronal Mass Ejections produced by the emergence of a twisted flux rope into the Solar Corona
- Recurrent explosive eruptions and the sigmoid-to-arcade transformation in the sun driven by dynamical magnetic flux emergence
Cited by in corpus (5)
- Prominence and Filament Eruptions Observed by the Solar Dynamics Observatory: Statistical Properties, Kinematics, and Online Catalog
- The dynamics of eruptive prominences
- Time-Latitude Distribution of Prominences for 10 Solar Cycles: A study using Kodaikanal, Meudon and Kanzelhohe Data
- Radio, X-ray, and EUV signatures of internal and external reconnection of an erupting flux rope
- Analysis of the Evolution of a Multi-Ribbon Flare and Failed Filament Eruption