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| Titel |
Ion distributions upstream and downstream of the Earth's bow shock: first results from Vlasiator |
| VerfasserIn |
D. Pokhotelov, S. von Alfthan, Y. Kempf, R. Vainio, H. E. J. Koskinen, M. Palmroth |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 31, no. 12 ; Nr. 31, no. 12 (2013-12-17), S.2207-2212 |
| Datensatznummer |
250086163
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| Publikation (Nr.) |
 copernicus.org/angeo-31-2207-2013.pdf |
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| Zusammenfassung |
| A novel hybrid-Vlasov code, Vlasiator, is developed for global simulations of
magnetospheric plasma kinetics. The code is applied to model the
collisionless bow shock on scales of the Earth's magnetosphere in two spatial
dimensions and three dimensions in velocity space retrieving ion distribution
functions over the entire foreshock and magnetosheath regions with
unprecedented detail. The hybrid-Vlasov approach produces noise-free
uniformly discretized ion distribution functions comparable to those measured
in situ by spacecraft. Vlasiator can reproduce features of the ion foreshock
and magnetosheath well known from spacecraft observations, such as
compressional magnetosonic waves generated by backstreaming ion populations
in the foreshock and mirror modes in the magnetosheath. An overview of ion
distributions from various regions of the bow shock is presented,
demonstrating the great opportunities for comparison with multi-spacecraft
observations. |
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