Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...195..545c&link_type=abstract
Astrophysical Journal, vol. 195, Jan. 15, 1975, pt. 1, p. 545-552. Research sponsored by the Consiglio Nazionale delle Ricerche
Astronomy and Astrophysics
Astrophysics
26
Astronomical Models, Magnetohydrodynamic Stability, Plasma Turbulence, Solar Flares, Solar Magnetic Field, Atmospheric Models, Chromosphere, Magnetic Field Configurations, Particle Acceleration, Plasma Heating, Solar Atmosphere, Two Dimensional Flow
Scientific paper
The main requirements of solar flare models that explain their development in terms of an appropriate sequence of plasma instabilities are discussed. This sequence is characterized by a 'preheating phase' of the local chromospheric plasma, a 'flash phase' resulting from an explosive instability leading to particle acceleration and onset of plasma turbulence, and in the case of large flares by a 'hot phase' in which a significant amount of magnetic energy is converted into plasma flow and thermal energy. The relevant evolution of the electron distribution function and the two-dimensional flow and magnetic field configurations that can be consistent with the above-mentioned model are considered.
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