Evidence for an extended reconnection line at the dayside magnetopause

Details Evidence for an extended reconnection line at the dayside magnetopause Evidence for an extended reconnection line at the dayside magnetopause

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ep%26s...53..619p&link_type=abstract

Earth, Planets and Space, Volume 53, p. 619-625.

Physics

4

Scientific paper

We report in-situ detection by two spacecraft of oppositely directed jets of plasma emanating from a magnetic reconnection site at the Earth's dayside magnetopause, confirming a key element inherent in all reconnection scenarios. The dual-spacecraft (Equator-S and Geotail) observations at the flank magnetopause, together with SuperDARN Halley radar observations of the subsolar cusp region, reveal the presence of a rather stable and extended reconnection line which lies along the equatorial magnetopause. These observations were made under persistent southward interplanetary magnetic field (IMF) conditions, implying that under these conditions the reconnection sites are determined by the large-scale interactions between the solar wind magnetic field and the dayside magnetosphere, rather than by local conditions at the magnetopause. Control by local conditions would result in patchy reconnection, distributed in a less well-organized fashion over the magnetopause surface.

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