Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...416..386r&link_type=abstract
Astrophysical Journal v.416, p.386
Astronomy and Astrophysics
Astronomy
10
Magnetohydrodynamics: Mhd, Sun: Corona, Sun: Flares, Sun: Magnetic Fields
Scientific paper
In this paper, we develop a linear, analytic model for magnetic reconnection and current sheet formation at an X-type neutral line in the solar atmosphere. The reconnection process is assumed to be driven by converging or diverging footpoint motions at the photosphere. In particular, we examine how the stressed magnetic configuration around the neutral line is influenced by the magnitude of the photospheric driving velocities and the properties of the plasma between the photosphere and the neutral line. From application of the model to the solar atmosphere in active regions, we suggest that flux cancellation in the photosphere may be accomplished through gradual, linear reconnection with little noticeable heating of the atmosphere around the reconnection site and that the classical coronal neutral line current sheet will likely undergo continual rapid dissipation that prevents the build-up of enough stored magnetic energy to power a flare.
Moore Ronald L.
Roumeliotis George
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