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| Titel |
Analysis of the substructure within a complex magnetic cloud on 3–4 September 2008 |
| VerfasserIn |
K. Andréeová, E. K. J. Kilpua, H. Hietala, H. E. J. Koskinen, A. Isavnin, R. Vainio |
| 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. 3 ; Nr. 31, no. 3 (2013-03-21), S.555-562 |
| Datensatznummer |
250019014
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| Publikation (Nr.) |
 copernicus.org/angeo-31-555-2013.pdf |
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| Zusammenfassung |
| In this paper we have analyzed a substructure found within a leading part of
a north–south-oriented magnetic cloud (MC) observed on 3–4 September 2008 in
the near-Earth solar wind by multiple spacecraft (ACE, Wind, THEMIS B and C).
The MC was preceded by a stream interface (SI) and followed by a high-speed
stream (HSS). The identified substructure featured a strong depletion of
suprathermal halo electrons and showed distinct magnetic field and plasma
signatures. It occurred where suprathermal electron flow within a cloud
changed from bidirectional to unidirectional, indicating change in the field
line connectivity to the Sun. We found that the substructure maintained
roughly its integrity from the first Lagrangian point to the vicinity of the
Earth's bow shock in the front edge of the MC, but revealed small changes in
the structure which could be explained either by temporal evolution or
spatial configuration of the spacecraft. |
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