Spatial Distribution and Properties of 0.1 – 100 keV Electrons in Jupiter's Polar Auroral Region

We present observations of 0.1 – 100 keV electrons from Juno's Jovian Auroral Distributions Experiment Electron instrument (JADE-E) over Jupiter's polar auroral region for periods around four Juno perijoves (PJ1, PJ3, PJ4, PJ5). The observations reveal regions containing magnetic field aligned beams of bi-directional electrons having broad energy distributions interspersed between beams of upward electrons with narrow, peaked energy distributions, regions void of these electrons, and regions dominated by penetrating radiation. The electrons show evidence of acceleration via parallel electric fields (inverted-V structures) and via stochastic processes (bi-directional distributions). The inverted-V structures shown here were observed from ~1.4 – 2.9 RJ and had spatial scales of 100s to 1000s of kilometers along Juno's trajectory. The upward electron energy flux was typically greater than the downward flux, the latter ranging between ~0.01 – 5 mW m-2 for two cases shown here which we estimate could produce ~0.1 – 50 kilorayleighs of ultraviolet emission.