Possibility of VLF-signal non-linear spectrum broadening in the magnetosphere

Details Possibility of VLF-signal non-linear spectrum broadening in the magnetosphere Possibility of VLF-signal non-linear spectrum broadening in the magnetosphere

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39.1537d&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 39, Nov. 1991, p. 1537-1540.

Computer Science

1

Computerized Simulation, Magnetospheric Electron Density, Very Low Frequencies, Wave-Particle Interactions, Whistlers, Doppler Effect, Electrostatic Waves

Scientific paper

The interaction between oblique electrostatic whistler mode waves and thermal electrons in the magnetosphere results in generation of sidebands. Computer simulations show that sideband instabilities develop in nonmonochromatic waves, though there is no trapped electron motion in the field of initially excited waves. Additional maxima in the wave spectrum appear at sideband frequencies that differ from the main frequency by about 0.5 kHz for waves of amplitude about 3 mV/m. The amplitude of sideband maxima can be compared with the amplitude of the main mode. This means of modification of whistler wave spectra in the magnetosphere is complementary to the Doppler broadening mechanism, and is considerable for intense signals.

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