A hydromagnetic vortex seen by ISEE-1 and 2

Details A hydromagnetic vortex seen by ISEE-1 and 2 A hydromagnetic vortex seen by ISEE-1 and 2

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jatp...43..927s&link_type=abstract

(European Geophysical Society, Annual Meeting on Geomagnetic Pulsations, 7th, Budapest, Hungary, Aug. 24-29, 1980.) Journal of A

Physics

19

Magnetohydrodynamic Waves, Plasma Layers, Satellite Observation, Space Plasmas, Vortices, Energy Transfer, Flow Velocity, International Sun Earth Explorers, Plasma Diagnostics, Time Response

Scientific paper

Magnetometer and plasma data from the dual ISEE spacecraft are combined in a study of the initial plasma vortex event reported by Hones et al. (1978) in the dawn plasma sheet. The event is a transient hydromagnetic wave of two cycles duration with a six minute period. Large amplitude compressional and transverse magnetic components were present. Particle and magnetic pressure oscillations were in strict antiphase, but did not balance. When combined with the plasma velocity data these properties show that substantial Earthward field-aligned flows of electromagnetic energy and heat flux occurred during the vortex. The net energy flow perpendicular to B was in the antisolar direction. This event possesses hydromagnetic features unique to a hot plasma environment.

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