Equilibrium of solar coronal arcades

Details Equilibrium of solar coronal arcades Equilibrium of solar coronal arcades

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...349..345f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 349, Jan. 20, 1990, p. 345-361. Research supported by the U.S. Navy.

Astronomy and Astrophysics

Astrophysics

41

Current Sheets, Magnetohydrodynamics, Solar Corona, Solar Flares, Solar Magnetic Field, Energy Transfer, Plasma Heating, Skylab Program, Stellar Mass Ejection

Scientific paper

Properties of two-dimensional, straight, magnetic arcade equilibria in the solar corona are studied in an MHD framework. Sequences of MHD equilibria are obtained by solving the Grad-Shafranov equation with the footpoint displacement or entropy prescribed. It is shown that no multiple solutions, or bifurcations, result, in contrast with the approach prescribing the axial magnetic field or pressure. The physical conditions for which the footpoint displacement or entropy must be specified are discussed, and the limiting configurations for infinite footpoint displacement and infinite entropy are addressed.

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