Direct evidence for prolonged magnetic reconnection at a continuous x-line within the heliospheric current sheet

Jack T. Gosling, S. Eriksson, T. D. Phan, D. E. Larson, R. M. Skoug, D. J. McComas

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42 Scopus citations

Abstract

Observations by 5 spacecraft of an exceptionally broad (1.85 × 106 km) Petschek-type reconnection exhaust within the heliospheric current sheet, HCS, in the solar wind at 1 AU on 31 August and 1 September 2001 provide convincing direct evidence for prolonged (at least 5 hours) magnetic reconnection at a continuous X-line in the solar wind. At least 1.2 × 1024 ergs of magnetic energy were extracted from the HCS in this event and converted to kinetic and thermal energy of the exhaust plasma. The reconnection produced field lines disconnected from the Sun and may have originated inside the point where the solar wind became super-Alfvénic, thereby slightly reducing the amount of open magnetic flux present in the heliosphere. Coyright 2007 by the American Geophysical Union.

Original languageEnglish (US)
Article numberL06102
JournalGeophysical Research Letters
Volume34
Issue number6
DOIs
StatePublished - Mar 28 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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