High resolution spectral analysis of the Jovian decametric radiation. II - The band-like emissions

Details High resolution spectral analysis of the Jovian decametric radiation. II - The band-like emissions High resolution spectral analysis of the Jovian decametric radiation. II - The band-like emissions

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...29..477f&link_type=abstract

Icarus, vol. 29, Dec. 1976, p. 477-482. NSF-NASA-supported research.

Physics

14

Decametric Waves, Jupiter (Planet), Planetary Radiation, Radio Emission, Radio Spectra, Spectrum Analysis, Electron Density (Concentration), Electron Diffusion, Emission Spectra, High Resolution, Planetary Magnetic Fields, Power Spectra

Scientific paper

Analysis of the bandlike Jovian decametric emission is presented. A model for the active region that accounts for the observed radiation characteristics is described using the measured parameters of the bandlike emission and a model of the Jovian magnetic field. The active region is characterized not only by the fact that an upward-flowing electron stream is caused to radiate in this region, but the stream itself is broken into radiating electron bunches within the active region. Observed undulations of the emission band on the time-frequency plane are interpreted as motions of the active region along a flux tube. The instantaneous location of the active region along the flux tube shows a dependence on the density of the stream entering the active region. The mechanism responsible for density modulation of the stream appears to be common to both the bandlike and simple-S-burst emission types.

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