Photoelectron Emission from io as the Cause of Enhancements of the Jovian Decametric Radiation

A theoretical explanation for the dependence of the Jovian decametric radiation on the position of its satellite lo is advanced in terms of electrostatic instabilities created by injection into the hot natural plasma of cold photoelectrons from lo. This may be tested with appropriately positioned and presently planned deep-space probes that search for variations of the Jovian decametric radiation at times following local sunset and sunrise at lo.