Extended Juno/Waves Low-Frequency Radio Component Catalog: New local time Insights on the Jovian Broadband Kilometric Radiation

The Juno/Waves survey of Jupiter’s low-frequency radio emissions allows statistical and geometrical characterization of the radio sources and their beaming. The first version Juno/Waves catalog (v1.0), from April 2016 to June 2019, provided the first latitudinal occurrence distributions of all the Jovian radio components, but was limited to local times from the dawn-side of Jupiter. We present an extended Juno/Waves low-frequency radio component catalog (v2.1), covering observations below 141 kHz from April 2016 to January 2023 that now includes both dawn and dusk observations. Using this dataset, we update and derive for the Jovian broadband kilometric radiation (bKOM), the occurrence probability and intensity distributions as functions of frequency, magnetic latitude, system III longitude, and local time. The bKOM statistical structures confirms local time asymmetries: occurrence and intensity are more prominent on the dawn-side, peaking for local times between 02:30 and 04:00 in the southern hemisphere (around -50^∘), longitudinal distributions remain symmetric but with distinct minima and maxima of occurrences, consistent with an occultation effect induced by the plasma disk, more pronounced in the dusk-side of Jupiter. These results support recent studies linking bKOM activity to dawn-side auroral dynamics.