High resolution spectral analyses of the Jovian decametric radiation. I - Burst morphology and drift rates

Details High resolution spectral analyses of the Jovian decametric radiation. I - Burst morphology and drift rates High resolution spectral analyses of the Jovian decametric radiation. I - Burst morphology and drift rates

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...29..463k&link_type=abstract

Icarus, vol. 29, Dec. 1976, p. 463-475. NSF-NASA-supported research.

Mathematics

Logic

28

Decametric Waves, Drift Rate, Jupiter (Planet), Planetary Radiation, Radio Bursts, Radio Spectra, Spectrum Analysis, Gyrofrequency, High Resolution, Spectral Resolution, Synchrotron Radiation

Scientific paper

Morphological analyses of high-resolution spectral recordings of Jovian decametric radiation show a regime of phenomena not seen at lower resolutions. Observed emissions range from narrow-band (50 kHz) simple quasi-periodic bursts to wide-band emissions (extending over a 500-kHz passband) exhibiting complex structural detail. Assuming gyroemission from electrons in a dipole field for which the magnetic moment is 10 Gauss Jupiter-radius-cubed, drift-rate measurements of the bursts indicate that the source size is of the order of 600 km and its location is near 1.3 Jupiter radii at a colatitude of 27.3 deg. The measurements suggest that the emitting electrons belong to a population having a very specific equatorial pitch angle near 3.5 deg. This study concludes that it may be possible to verify gyroemission as the mechanism responsible for the decametric radiation.

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