Equilibrium configuration of coronal loops

Details Equilibrium configuration of coronal loops Equilibrium configuration of coronal loops

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985stin...8713384k&link_type=abstract

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Physics

Coronal Loops, Energy Dissipation, Magnetic Flux, Solar Physics, Steady State, Pressure Dependence, Time Dependence

Scientific paper

The steady-state pressure structure of a solar coronal loop is describable by a superposition of Chandrasekhar-Kendall functions. Each Chandrasekhar-Kendall function represents a force-free state. We extend this work to study the dynamical evolution of the loop as it moves outwards in the external medium while constantly maintaining its minimal energy configuration. This enables one to calculate the rate of energy dissipation as the loop moves outwards remaining in the minimal energy state under the invariance of the magnetic helicity and the magnetic fluxes. It is found that the nonaxisymmetric state becomes more favorable when the external pressure falls below a critical value.

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