Multiple flux rope magnetic ejecta in the solar wind

Details Multiple flux rope magnetic ejecta in the solar wind Multiple flux rope magnetic ejecta in the solar wind

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jgra..10903102h&link_type=abstract

Journal of Geophysical Research, Volume 109, Issue A3, CiteID A03102

Physics

14

Interplanetary Physics: Ejecta, Driver Gases, And Magnetic Clouds, Interplanetary Physics: Interplanetary Magnetic Fields, Interplanetary Physics: Solar Wind Plasma

Scientific paper

Four magnetic flux rope events observed by Advanced Composition Explorer (ACE) in the solar wind at 1 AU are examined by the Grad-Shafranov reconstruction technique. Their 2$\frac{1}{2D cross sections obtained from magnetic field and plasma measurements show configurations of multiple, nonsymmetric, cylindrical flux ropes embedded within their boundaries. Each boundary is defined in consistency with two-dimensional magnetohydrostatic theory. Among the four events, three have double flux rope configurations, and the fourth is a triplet. Parameters characterizing the events are derived. The orientation of cylindrical axis is obtained, and associated uncertainty is estimated. All events have unidirectional axial magnetic field and axial currents. The total axial magnetic flux is of the order ~1012 Wb, and the total axial current is of the order ~108 A. Each flux rope in the doubled flux rope pair and the triplet has the same chirality as its partner(s). Magnetic X points are formed between adjacent flux ropes on the plane perpendicular to the cylindrical axis. One event with abrupt change in magnetic field direction and another related to energetic particles are discussed.

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