Computer Science
Scientific paper
May 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974p%26ss...22..811l&link_type=abstract
Planetary and Space Science, Volume 22, Issue 5, p. 811-819.
Computer Science
10
Scientific paper
The appearance in the magnetosphere of the electric field connected with the Y-component of the interplanetary magnetic field is explained in a manner similar to J∅rgensen et al. in terms of a mechanism which is analogous to that of Dungey. An electric field will be directed across the tail along the north-south line, producing a potential difference between the northern and southern boundaries of the tail. Assuming high conductivity along the magnetic field lines, this potential difference can only exist in the region of open field lines. under some reasonable assumptions the pictures of the electric field, and also the field-aligned and equivalent ionospheric currents are calculated. The latter look like a simple vortex with strong compression of the current line in the noon-dawn sector. Looking from above the north pole, the directions of the current vortices are opposite in the northern and southern polar caps. The well-known results on the magnetic field (Svalgaard 1968; Mansurov, 1969) and on the electric field (Heppner, 1972) in the polar caps are explained. The field-aligned currents in this model can be responsible for the transverse magnetic disturbances observed by many authors near the dayside funnels.
Leont'yev S. V.
Lyatsky W. B.
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