Field-aligned particle streaming in the duskside high latitude Jovian magnetosphere
Krupp, N.; Woch, J.; Dougherty, M. K.; Keppler, E.; Korth, A.; Lanzerotti, L. J.; Maclennan, C. G.; Hawkins, S. E., III; Cheng, A. F.; Seidel, R.
Germany, United States, France, United Kingdom
Abstract
We report on observations of magnetic field and energetic particle data from the Ulysses spacecraft (S/C) inside the Jovian high latitude duskside magnetosphere. We have combined particle data from the EPAC and the HI-SCALE detectors and find evidence for bi-directional streaming of electrons along the magnetic field lines during the entire outbound pass on the duskside of Jupiter's magnetosphere. For protons we also find evidence of bi-directional streaming and additional mono-directional beams along the magnetic field away from the planet. In addition we show 10-hour and quasi-5-hour periodicities in the energetic particle count rates and count ratios which seem to be associated with the motion of the tilted current sheet relative to the S/C location.