Polarization measurements of auroral kilometric radiation by Dynamics Explorer-1

Details Polarization measurements of auroral kilometric radiation by Dynamics Explorer-1 Polarization measurements of auroral kilometric radiation by Dynamics Explorer-1

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982georl...9..913s&link_type=abstract

Geophysical Research Letters, vol. 9, Sept. 1982, p. 913-916.

Physics

57

Auroras, Dynamics Explorer 1 Satellite, Earth Magnetosphere, Kilometric Waves, Polarized Radiation, Propagation Modes, Wave Propagation

Scientific paper

The Plasma Wave Instrument (PWI) on the Dynamics Explorer-1 has been used to measure Polarization of auroral kilometric radiation (AKR) at frequencies of 50 to 400 kHz in both the northern and the southern nightside auroral regions at altitudes of 1 to 3 earth radii above the AKR source regions. The AKR polarization sense is found to be the same as the right hand polarized auroral hiss found in the frequency range of 0.8 to 6.4 kHz. Consequently, these unambiguous direct polarization measurements of AKR lead to the conclusion that AKR escapes the magnetosphere in the R-X mode. Since DE-1 is close to the source region, it can be inferred that AKR is generated predominately in the R-X mode.

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