The free energies of partially open coronal magnetic fields

Details The free energies of partially open coronal magnetic fields The free energies of partially open coronal magnetic fields

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...410..412l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 410, no. 1, p. 412-425.

Astronomy and Astrophysics

Astrophysics

66

Polytropic Processes, Solar Atmosphere, Solar Corona, Solar Magnetic Field, Magnetic Field Configurations, Magnetostatics, Solar Gravitation, Solar Prominences, Stellar Mass Ejection

Scientific paper

A simple model of the low corona is examined in terms of a static polytropic atmosphere in equilibrium with a global magnetic field. The question posed is whether magnetostatic states with partially open magnetic fields may contain magnetic energies in excess of those in fully open magnetic fields. Based on the analysis presented here, it is concluded that the cross-field electric currents in the pre-eruption corona are a viable source of the bulk of the energies in a mass ejection and its associated flare.

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