Jupiter's synchrotron radiation at 50 MHZ measured by the large 50MHZ Jicamarca array

Abstract

Jupiter radiates electromagnetic radiation in a broad spectrum. We are concerned here with the center part, usually referred as the decimetric radiation, a relatively flat part of the spectrum going from about 39.5 MHz merging into the thermal radiation at about 4GHz. The source of this radiation is synchrotron radiation emitted by energetic electrons, trapped in Jupiter's Van Allen radiation belt, gyrating around its magnetic field. The flux density of this radiation has been measured at many frequencies, the lowest being at around 80 MHZ.