Radiation from Jupiter at 4.8 Mc./s.

Abstract

EARLY observations of the decametric radio emissions of Jupiter appeared to show that they had a narrow spectrum with a peak in the vicinity of 20 Mc./s. (refs. 1 and 2). As a result there were attempts to explain the radiation in terms of some appropriate single frequency mechanism such as plasma oscillations in a Jovian ionosphere². More recently, however, with the passage of the solar activity maximum and consequent improving terrestrial observing conditions at low frequencies, the radiation has been detected at 10 Mc./s. (ref. 3). Here the results of observations at 4.8 Mc./s. will be reported.