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| Titel |
Signatures of interchange reconnection: STEREO, ACE and Hinode observations combined |
| VerfasserIn |
D. Baker, A. P. Rouillard, L. Driel-Gesztelyi, P. Demoulin, L. K. Harra, B. Lavraud, J. A. Davies, A. Opitz, J. G. Luhmann, J.-A. Sauvaud, A. B. Galvin |
| 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 (2009-10-12), S.3883-3897 |
| Datensatznummer |
250016677
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| Publikation (Nr.) |
 copernicus.org/angeo-27-3883-2009.pdf |
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| Zusammenfassung |
| Combining STEREO, ACE and Hinode observations has presented an
opportunity to follow a filament eruption and coronal mass ejection (CME) on
17 October 2007 from an active region (AR) inside a coronal hole
(CH) into the heliosphere. This particular combination of "open" and closed
magnetic topologies provides an ideal scenario for interchange reconnection
to take place. With Hinode and STEREO data we were able to identify
the emergence time and type of structure seen in the in-situ data four
days later. On the 21st, ACE observed in-situ the passage of an ICME
with "open" magnetic topology. The magnetic field configuration of the
source, a mature AR located inside an equatorial CH, has important
implications for the solar and interplanetary signatures of the eruption. We
interpret the formation of an "anemone" structure of the erupting AR and the
passage in-situ of the ICME being disconnected at one leg, as
manifested by uni-directional suprathermal electron flux in the ICME, to be a
direct result of interchange reconnection between closed loops of the CME
originating from the AR and "open" field lines of the surrounding CH. |
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