Large-scale LF electromagnetic waves in the Earth's magnetosheath

Details Large-scale LF electromagnetic waves in the Earth's magnetosheath Large-scale LF electromagnetic waves in the Earth's magnetosheath

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ge%26ae..47..548a&link_type=abstract

Geomagnetism and Aeronomy, Volume 47, Issue 5, pp.548-554

Physics

1

94.30.Tz

Scientific paper

The model equations describing the dynamics of the solar wind and interplanetary magnetic field in the dayside Earth’s magnetosheath have been studied. The large-scale flow structure near the critical point of the magnetosphere is determined in an approximation of the Chaplygin stagnation zone identified with the magnetosheath focal part. It has been indicated that magnetic gradient waves (MGWs), which represent a special branch of ULF electromagnetic oscillations of the magnetospheric resonator, can be generated in a magnetized plasma in the case when the magnetic field distribution is spatially inhomogeneous. The characteristic frequencies, periods, phase velocities, wavelengths, and amplitudes of MGW magnetic pulsations have been determined.

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