Plasma waves in magnetotail flux ropes

Details Plasma waves in magnetotail flux ropes Plasma waves in magnetotail flux ropes

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.1424k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, Feb. 1, 1986, p. 1424-1438.

Physics

14

Geomagnetic Tail, Magnetic Field Configurations, Magnetic Flux, Plasma Waves, Cyclotron Frequency, Electric Fields, Electron Plasma, Plasma Frequencies, Whistlers

Scientific paper

The plasma waves associated with the magnetotail flux ropes of December 28, 1982, December 30, 1982, and March 25, 1983, originally identified by Sibeck et al. (1984) are studied. Broadband electrostatic noise was found in the sheaths and cores of all three flux ropes. The frequency range extended from about 100 Hz to the local electron plasma frequency. The electric field vector tended to be aligned either parallel or antiparallel to the local magnetic field direction throughout the complex flux rope magnetic field configuration. The March 25, 1983, flux rope also contained an intense band of whistler mode noise extending up to one half the local electron cyclotron frequency. The superthermal electrons generating the observed whistler mode noise may have had highly anisotropic pitch angle distributions.

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