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| Titel |
Kinetic slow mode-type solitons |
| VerfasserIn |
K. Baumgärtel, K. Sauer, E. Dubinin |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 12, no. 2 ; Nr. 12, no. 2 (2005-02-11), S.291-298 |
| Datensatznummer |
250010490
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| Publikation (Nr.) |
 copernicus.org/npg-12-291-2005.pdf |
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| Zusammenfassung |
| One-dimensional hybrid code simulations are presented, carried out in order
both to study solitary waves of the slow mode branch in an isotropic,
collisionless, medium-β plasma (βi=0.25) and to test the fluid
based soliton interpretation of Cluster observed strong magnetic depressions
(Stasiewicz et al., 2003; Stasiewicz, 2004) against kinetic theory. In the simulations, a variety of
strongly oblique, large amplitude, solitons are seen, including solitons with
Alfvenic polarization, similar to those predicted by the Hall-MHD theory, and
robust, almost non-propagating, solitary structures of slow magnetosonic type
with strong magnetic field depressions and perpendicular ion heating, which
have no counterpart in fluid theory. The results support the soliton-based
interpretation of the Cluster observations, but reveal substantial deficiencies
of Hall-MHD theory in describing slow mode-type solitons in a plasma of
moderate beta. |
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