Observation of reconnection phenomena at synchronous orbit

Details Observation of reconnection phenomena at synchronous orbit Observation of reconnection phenomena at synchronous orbit

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.4321c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, April 1, 1986, p. 4321-4344.

Physics

11

Geosynchronous Orbits, Magnetic Field Reconnection, Magnetohydrodynamic Stability, Magnetopause, Radiation Pressure, Solar Terrestrial Interactions, Solar Wind, Magnetic Flux, Magnetosheath, Plasma Dynamics, Satellite Observation, Solar Activity Effects

Scientific paper

SCATHA satellite observations of large-amplitude magnetic field oscillations in the magnetosheath and in the associated plasma are studied. Large-amplitude variations in the magnetosheath magnetic field intensity with a quasi-period of 10 s were observed. Nearly static structures of high-beta plasma associated with the magnetic field minima and low-beta plasma associated with the magnetic field maxima were observed convecting toward the earth. The morphology of charged particle data for the transition between the magnetosphere and the magnetosheath for a northward magnetosheath magnetic field is presented. A convection electric field of about 9 mV/m was inferred from the spectral difference between solar and antisolar drifting ions in the magnetosheath near a magnetopause rotational discontinuity. A trapped component was observed in the magnetosheath plasma during both northward and southward magnetosheath magnetic fields. It is concluded that flux transfer events arise from the interaction of the earthward convecting plasma filaments with the magnetospheric magnetic field at the magnetopause.

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