Driven magnetic reconnection in three dimensions - Energy conversion and field-aligned current generation

Details Driven magnetic reconnection in three dimensions - Energy conversion and field-aligned current generation Driven magnetic reconnection in three dimensions - Energy conversion and field-aligned current generation

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.9761s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Nov. 1, 1984, p. 9761-9769.

Physics

38

Energy Conversion, Field Aligned Currents, Geomagnetism, Lines Of Force, Magnetic Field Configurations, Magnetic Storms, Current Density, Magnetohydrodynamic Flow, Magnetospheric Instability

Scientific paper

The energy conversion processes occurring in three-dimensional driven reconnection is analyzed. In particular, the energy conversion processes during localized reconnection in a taillike magnetic configuration are studied. It is found that three-dimensional driven reconnection is a powerful energy converter which transforms magnetic energy into plasma bulk flow and thermal energy. Three-dimensional driven reconnection is an even more powerful energy converter than two-dimensional reconnection, because in the three-dimensional case, plasmas were drawn into the reconnection region from the sides as well as from the top and bottom. Field-aligned currents are generated by three-dimensional driven reconnection. The physical mechanism responsible for these currents which flow from the tail toward the ionosphere on the dawnside of the reconnection region and from the ionosphere toward the tail on the duskside is identified. The field-aligned currents form as the neutral sheet current is diverted through the slow shocks which form on the outer edge of the reconnected field lines (outer edge of the plasma sheet).

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