Physics
Scientific paper
Mar 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981soph...70..149s&link_type=abstract
Solar Physics, vol. 70, Mar. 1981, p. 149-172.
Physics
39
Coronal Loops, Magnetohydrodynamics, Solar Flares, Solar Magnetic Field, Solar Physics, Current Density, Drift Rate, Electrical Resistivity, Electron Density Profiles, Energy Dissipation, Magnetohydrodynamic Stability, Magnetohydrodynamic Waves, Particle Acceleration, Plasma Temperature
Scientific paper
Due to developments in solar flare observations which appear to show that a particular class of solar flares result from instabilities occurring in magnetic loops we re-examine the Alfvén-Carlqvist flare model to show that it is workable and we update the Spicer loop model of a flare. It is noted that the Alfvén-Carlqvist model of necessity requires an external current driver which must maintain the current driven instability at marginal stability during the duration of the flare. In addition, it is argued that if the Alfvén-Carlqvist model is to work the current density must rise in a time shorter than an MHD or resistive tearing mode time scale. Otherwise, the dominant flare mechanism must be an ideal MHD or tearing type instability. Further, the distinctions between the two models are highlighted and a new hybrid model of the Alfvén-Carlqvist and Spicer models is introduced.
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