A band of whistler-mode noise identified as auroral hiss has been observed on the inner edge of the Io plasma torus. This noise provides evidence for the existence of aurora-like charged particle beams on magnetic field lines through the inner edge of the torus. These beams probably consist of low-energy electrons and may be associated with field-aligned currents linking the plasma torus to the jovian ionosphere.
- D. A. Gurnett
- W. S. Kurth
- F. L. Scarf
