Magnetopause mapping to the ionosphere for northward IMF
We study the topological structure of the magnetosphere for northward IMF. Using a magnetospheric magnetic field model we study the high-latitude response to prolonged periods of northward IMF. For forced solar wind conditions we investigate the location of the polar cap region, the polar cap po...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2007-01-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/25/2615/2007/angeo-25-2615-2007.pdf |
| Summary: | We study the topological structure of the magnetosphere for northward IMF.
Using a magnetospheric magnetic field model we study the high-latitude
response to prolonged periods of northward IMF. For forced solar wind
conditions we investigate the location of the polar cap region, the polar
cap potential drop, and the field-aligned acceleration potentials, depending
on the solar wind pressure and IMF <i>B<sub>y</sub></i> and <i>B<sub>x</sub></i> changes. The open field
line bundles, which connect the Earth's polar ionosphere with interplanetary
space, are calculated. The locations of the magnetospheric plasma domains
relative to the polar ionosphere are studied. The specific features of the
open field line regions arising when IMF is northward are demonstrated. The
coefficients of attenuation of the solar wind magnetic and electric fields
which penetrate into the magnetosphere are determined. |
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| ISSN: | 0992-7689 1432-0576 |