A Survey of Electron Conics at Jupiter Utilizing the JADE-E Data During Science Orbits 01, 03-30

摘要

We present a survey of electron conics over Jupiter's high latitude regions utilizing 22.6 hr of data from the Jovian Auroral Distribution Experiment electron instrument aboard NASA's Juno spacecraft during science orbits 01 and 03-30. We observed electron conics for about 2.5% of this time and characterized them into three types based on their direction of motion along Jupiter's magnetic field lines: upward, downward, and bidirectional. We observed the upward electron conics most often and at energies of 0.057–80.1 keV, while we observed the downward electron conics least often and at energies of 0.073–1.2 keV. We observed bidirectional electron conics mostly around the same times and places as the upward electron conics having energies of 0.081–49.6 keV. We observed all electron conic types to occur mostly at altitudes 0.3–0.4 R_J and local times 15–16 hr. Furthermore, we observed all electron conic types to have energies greater than 0.7 keV below an altitude of 0.5 R_J and over the main auroral region.