CME Onset Due to Loss of Confinement of Twisted Magnetic Flux Ropes

Details CME Onset Due to Loss of Confinement of Twisted Magnetic Flux Ropes CME Onset Due to Loss of Confinement of Twisted Magnetic Flux Ropes

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsp23a..08f&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SP23A-08

Physics

7509 Corona, 7513 Coronal Mass Ejections, 7524 Magnetic Fields, 7531 Prominence Eruptions

Scientific paper

We present MHD simulations in both 2D axisymmetric and 3D spherical geometries of the evolution of a twisted magnetic flux rope emerging into the low-β corona previously occupied by a potential arcade field. We describe both the initial quasi-static evolution whereby stable equilibrium structures can form with stored free magnetic energy, and the eventual loss of confinement or equilibrium of the twisted magnetic flux rope as sufficient twist is being transported into the corona, resulting in the onset of a CME. We investigate how the evolution and the loss of equilibrium for a 3D line-tied flux rope differ compared to the case of a 2D axisymmetric flux rope.

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