Get access
Journal of Geophysical Research: Space Physics

Some spectral characteristics of the hectometric Jovian emission


  • A. Lecacheux,

  • B. Moller-Pedersen,

  • A. C. Riddle,

  • J. B. Pearce,

  • A. Boischot,

  • J. W. Warwick


The study of the dynamic spectra of hectometric Jovian emission (f<1.3 MHz) for the period January to June 1978 from the planetary radio astronomy (PRA) experiment on the Voyager 1 and 2 spacecraft shows that its shape is stable with the rotation of the planet. However, there are noticeable differences between the spectra observed at one-month intervals by one spacecraft, or simultaneously by the two spacecraft, which can be clearly related neither to an effect of Io nor to the Jovicentric declination of the observer.

Get access to the full text of this article