Effect of the geomagnetic-field structure on the amplification of circularly polarized waves in the earth's magnetosphere

Details Effect of the geomagnetic-field structure on the amplification of circularly polarized waves in the earth's magnetosphere Effect of the geomagnetic-field structure on the amplification of circularly polarized waves in the earth's magnetosphere

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ge%26ae..27..971f&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 27, Nov.-Dec. 1987, p. 971-976. In Russian.

Physics

Circular Polarization, Earth Magnetosphere, Geomagnetism, Magnetic Flux, Magnetohydrodynamic Waves, Distribution Functions, Geomagnetic Micropulsations, Proton Energy

Scientific paper

Expressions are obtained for the increment of circularly polarized Alfven waves for two types of distribution functions of high-energy protons depending on the geomagnetic-field structure. The increment has a sharp maximum at the boundary between a region with one magnetic-field-strength minimum at the field-line apex and a region in which there are two field-strength minima on the field line. The results obtained can be used to interpret Pc1 geomagnetic pulsations (i.e., pearls).

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