Observational evidence of Z and L-O mode waves as the origin of auroral kilometric radiation from the Jikiken (EXOS-B) satellite

Details Observational evidence of Z and L-O mode waves as the origin of auroral kilometric radiation from the Jikiken (EXOS-B) satellite Observational evidence of Z and L-O mode waves as the origin of auroral kilometric radiation from the Jikiken (EXOS-B) satellite

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.6189o&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Aug. 1, 1983, p. 6189-6203.

Physics

41

Atmospheric Radiation, Auroral Zones, Exos-B Satellite, Kilometric Waves, Plasma Waves, Polarized Electromagnetic Radiation, Satellite Observation, Space Plasmas, Explorer 52 Satellite, Isis Satellites, Plasma Spectra, Radio Spectra, Radio Wave Refraction, Voyager 2 Spacecraft

Scientific paper

The present investigation has the objective to present new information on the polarization of the auroral kilometric radiation detected by the Jikiken (EXOS-B) satellite. On September 16, 1978, the satellite had been launched into an orbit with altitudes of the initial apogee and perigee of 30,050 km and 250 km, respectively, and an inclination of -31 deg. This orbit provides the conditions for suitable observations of the spectra of auroral kilometric radiation (AKR) in the proximity of the source regions. A study has been conducted of the discovered Z mode waves. These waves are found to be refracted to a nearly perpendicular direction of propagation with respect to the magnetic field vector within a very short distance of the source position. AKR spectra have been observed at positions where the ambient plasma defines a lower edge of the spectra by the cutoff effects of the waves propagating in the local plasma.

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