Colloquium: New insights into Jovian auroral radio emissions from Juno observations: focus on satellite-magnetosphere interaction

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Jupiter is the planet with the most intense and extensive radio emission in our solar system, and is often used as a point of comparison for exoplanets. The Jovian radio spectrum is composed of no less than half a dozen components, from low-frequency emissions, such as quasi-periodic bursts (QP) or trapped continuum radiation (from a few kHz to tens of kHz), to high-frequency emissions produced above the poles, ranging from a few MHz to 40 MHz. Since July 2016, Juno has been orbiting Jupiter, performing a polar orbit every 53 days during its prime mission, sampling all latitudes, longitudes and local times. These polar orbits took Juno directly into the auroral zones, where electrons are accelerated and produce the auroral radio emissions. In this presentation, I will focus on the main results obtained by Juno during its prime mission concerning auroral radio emissions and their link with auroral emissions in the ultraviolet range. Particular emphasis will be placed on the emissions produced by the interaction between Jupiter and its main moons, Io, Europa and Ganymede, opening the door to their giant equivalent: star-exoplanet interactions.