Abstract
[1] The response of the near-Earth plasma sheet to the extraction of a longitudinally-limited field-aligned current is investigated using three-dimensional particle-in-cell simulations. Polarization electric fields produce localized (in y), thin (in z), enhanced electron Hall currents, thus augmenting the cross-tail current. The current diversion forces reconnection to occur locally and leads to the formation of a complex magnetic field pattern of adjacent regions of negative and positive Bz.
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