Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387..403m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 387, March 1, 1992, p. 403-413.
Astronomy and Astrophysics
Astrophysics
22
Energy Transfer, Magnetohydrodynamic Waves, Solar Corona, Solar Flares, Wave Propagation, Energy Dissipation, Photosphere, Rotating Plasmas, Solar Magnetic Field
Scientific paper
A model for energy propagation into the energy release site is formulated in terms of Alfvenic fronts where stored magnetic energy is partially converted into an energy flux. It is found that, irrespective of the model's details, the energy released in a flare kernel cannot be simply the energy stored within the energy release site. Energy must flow into the energy release site, predominantly along the mean magnetic field, from at least the entire coronal portion of the flaring flux tube. Some energy can also flow into the corona from below the photosphere during a flare, but this is unlikely to be important in the impulsive phase of the flare. When the energy release turns on in a flare kernel, the system responds by creating two fronts that propagate away from the energy release site at the Alfven speed. Part of the initial current flowing through the energy release site is deflected at the front so that it flows around the energy release site.
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