Modeling the magnetic effects of field-aligned currents

Details Modeling the magnetic effects of field-aligned currents Modeling the magnetic effects of field-aligned currents

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9813529d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A8, p. 13,529-13,543.

Physics

30

Earth Ionosphere, Earth Magnetosphere, Electric Current, Field Aligned Currents, Magnetic Fields, Ionospheric Currents, Magnetic Field Configurations, Mathematical Models

Scientific paper

In this paper, I present a newly developed model of the magnetic effects of field-aligned currents. The magnetic field of a large-scale field-aligned current system is obtained by summing the magnetic fields of a large number of finite length cylindrical current elements. The resulting magnetic field is valid inside of, near, and far away from the model field-aligned currents, both near the ionosphere and in the magnetosphere. The modeling technique allows for the closure of the field-aligned currents along any specified path. The effects of field-aligned currents on the nightside magnetospheric magnetic field and on mapping between the nightside magnetosphere and ionosphere are investigated using an empirical magnetic field model.

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