LOW-ENERGY INTERPLANETARY CHARGED-PARTICLES - SOLAR SOUTH-POLE TO SOLAR NORTH-POLE AND HIGH HELIOLATITUDES

Low-energy (greater than or similar to 50 keV) charged particles measu red by the HI-SCALE instrument on the Ulysses spacecraft provided uniq ue information on the particle composition and intensity in both polar regions of the Sun. Further, the rapid 160 degrees South-to-North sol ar transit of Ulysses in early 1995 yielded new information on heliosp heric structure. This paper reviews several of the key HI-SCALE result s, including the latitude dependence of particle acceleration by corot ating interaction regions, particle propagation from equatorial region s of the Sun to high heliolatitudes, and the appearance of numerous pe l iodic components in the power spectra of the particle variations, th e frequencies of which are consistent with those estimated (but not as yet confirmed) for gravity-mode oscillations of the Sun.