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Titel |
Double Star TC-1 observations of component reconnection at the dayside magnetopause: a preliminary study |
VerfasserIn |
Z. Y. Pu, C. J. Xiao, X. G. Zhang, Z. Y. Huang, S. Y. Fu, Z. X. Liu, M. W. Dunlop, Q. G. Zong, C. M. Carr, H. Rème, I. Dandouras, A. Fazakerley, T. Phan, T. L. Zhang, H. Zhang, X. G. Wang |
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 ; 23, no. 8 ; Nr. 23, no. 8 (2005-11-08), S.2889-2895 |
Datensatznummer |
250015355
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Publikation (Nr.) |
copernicus.org/angeo-23-2889-2005.pdf |
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Zusammenfassung |
In spring 2004 Double Star TC-1 measured a number of reconnection
signatures at the dayside low-latitude magnetopause (MP) when
there was a notable By component in the magnetosheath. In a
number of events we can show that reconnection was operating
nearby TC-1 in the subsolar MP region. In this paper we describe
three representative events: (a) event on 21 March 2004 in which
the reconnection site can be remotely monitored, the spacecraft
was passing by the X-line; (b) event on 12 March 2004 in which TC-1
observed the magnetospheric part of the quadrupolar field,
together with a consistent flow reversal; (c) event on 26 March 2004
which occurred for northward IMF, TC-1 observed a reversal of
vy across the equatorial MP. In these events the shear angles
across the MP were considerably smaller than 180°; a
noticeable guide field was present. These observations are
consistent with near equatorial component merging, suggesting that
component reconnection preferably occurs at the dayside
low-latitude MP. There is evidence that when a pronounced magnetic
shear across the MP exists in the By component, reconnection
may operate at the dayside low-latitude MP for northward IMF
Bz. |
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