Abstract
The apparent change of Jupiter's rotation rate derived from decameter emission probability histograms is shown to differ from the change derived by comparing dynamic spectra of the radiation. The dynamic spectra indicate that the two major “sources” of radiation shifted longitudes in opposite directions over the period from 1960 through 1965. The drift of histogram features and the drift of spectral features is attributed partly to emission beam divergence as the Earth's declination changes, and partly to a slightly incorrect System III period. The observations are explained by a model in which much of Jupiter's emission (especially the Io-related emission) is beamed in a thin conical sheet from Jupiter's northern hemisphere. On Earth, we observe the two regions where the sheet crosses the ecliptic plane.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
