Cross-tail magnetic flux ropes as observed by the GEOTAIL spacecraft

Details Cross-tail magnetic flux ropes as observed by the GEOTAIL spacecraft Cross-tail magnetic flux ropes as observed by the GEOTAIL spacecraft

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22.1193l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 10, p. 1193-1196

Physics

17

Magnetic Clouds, Magnetic Field Configurations, Magnetic Flux, Magnetic Signatures, Planetary Magnetotails, Plasmas (Physics), Current Density, Data Correlation, Force-Free Magnetic Fields, Mathematical Models

Scientific paper

Ten transient magnetic structures in Earth's magnetotail, as observed in GEOTAIL measurements, selected for early 1993 (at (-) X(sub GSM) = 90 - 130 Earth radii), are shown to have helical magnetic field configurations similar to those of interplanetary magnetic clouds at 1 AU but smaller in size by a factor of approximately = 700. Such structures are shown to be well approximated by a comprehensive magnetic force-free flux-rope model. For this limited set of 10 events the rope axes are seen to be typically aligned with the Y(sub GSM) axis and the average diameter of these structures is approximately = 15 Earth radii.

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