A model of impulsive loop flares caused by anomalous heat conduction

Details A model of impulsive loop flares caused by anomalous heat conduction A model of impulsive loop flares caused by anomalous heat conduction

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..142..327t&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 142, no. 2, p. 327-339.

Physics

11

Conductive Heat Transfer, Coronal Loops, Electric Current, Solar Flares, Transient Heating, Digital Simulation, Electron Plasma, Magnetic Energy Storage, Plasma Waves, Velocity Distribution

Scientific paper

Numerical simulation is used here to study the transient heat conduction triggered by the applied minor heating of a segment near the top of a coronal loop. Ohmic dissipation of an applied electric current under anomalous resistivity heats the region, which spreads along the loop in both directions, causing the velocity humps over a wider area. The speed of spread is nearly always equal to the speed of flux-limited heat condition, equally 20,000-30,000 km/s at over 10 s, about 0.3 times the electron thermal velocity. The induced electric voltage along the loop is estimated to be 3.3 x 10 exp 7 V.

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