Juno Waves Observations of Quasi-Periodic (QP) Emissions at Jupiter

Abstract:

A number of different quasi-periodic (QP) wave, particle and auroral emissions with periods ranging from tens of seconds to tens of minutes have been detected at Jupiter. The Juno spacecraft with its highly eccentric polar orbit around Jupiter provides a new opportunity to examine these QP signatures. The Juno Waves instrument detects a number of different QP plasma and radio emissions during most of its orbits. In the outer magnetosphere, QP enhancements of the trapped continuum emission are often detected, with properties similar to earlier Galileo observations. In the auroral zone, QP enhancements of the plasma waves (primarily auroral hiss) are often observed. These high latitude emissions have many similar properties to high latitude emissions observed at Saturn. Juno has also detected a new QP emission on L shells connected to the Io torus. These QP whistler mode emissions have some many similar properties to QP whistler mode emissions detected at Earth and Saturn. We discuss the characteristics and occurrence of these emissions as detected by Juno and compare them to earlier observations at Jupiter, Earth and Saturn.