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| Titel |
The role of lateral magnetic reconnection in solar eruptive events |
| VerfasserIn |
A. Soenen, A. Bemporad, C. Jacobs, S. Poedts |
| 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 ; 27, no. 10 ; Nr. 27, no. 10 (2009-10-16), S.3941-3948 |
| Datensatznummer |
250016682
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| Publikation (Nr.) |
 copernicus.org/angeo-27-3941-2009.pdf |
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| Zusammenfassung |
| On 10–11 December 2005 a slow CME occurred in between two coronal streamers
in the Western Hemisphere. SOHO/MDI magnetograms show a multipolar magnetic
configuration at the photosphere consisting of a complex of active regions
located at the CME source and two bipoles at the base of the lateral coronal
streamers. White light observations reveal that the expanding CME affects
both of the lateral streamers and induces the release of plasma within or
close to them. These transient phenomena are possibly due to magnetic
reconnections induced by the CME expansion that occurs either inside the
streamer current sheet or between the CME flanks and the streamer. Our
observations show that CMEs can be associated to not only a single
reconnection process at a single location in the corona, but also to many
reconnection processes occurring at different times and locations around the
flux rope. Numerical simulations are used to demonstrate that the observed
lateral reconnections can be reproduced. The observed secondary reconnections
associated to CMEs may facilitate the CME release by globally decreasing the
magnetic tension of the corona. Future CME models should therefore take into
account the lateral reconnection effect. |
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