Prominence models with line currents - Stabilisation by flux conservation

Details Prominence models with line currents - Stabilisation by flux conservation Prominence models with line currents - Stabilisation by flux conservation

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...238..365a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 238, no. 1-2, Nov. 1990, p. 365-368.

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Solar Prominences, Stellar Models, Computational Astrophysics, Magnetic Flux, Perturbation Theory, Polarity, Stabilization

Scientific paper

A model of prominence eruption, based on a filament with circular cross section as different from the filament of a single line current used in earlier models, is presented. For configurations with normal and inverse polarity, the model is considered to be stable with respect to the vertical displacements. This implies that simple configurations cannot model prominence eruptions unless the effect of flux conservation is also included. It is found that if the magnetic flux below a finite size filament is conserved, a run-away instability no longer exists. The results apply to a limited class of 2-D equilibria containing a cylindrical filament and subjected to strictly 2-D perturbation. Models that are more realistic can be unstable.

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