Sources of shocks and compressions in the high-latitude solar wind: Ulysses
Hoeksema, J. T.; McComas, D. J.; Goldstein, B. E.; Phillips, J. L.; Gosling, J. T.; Hammond, C. M.
United States
Abstract
During its southern transit Ulysses sampled the solar wind to -80.2° latitude. Slow streamer belt wind was seen only equatorward of -35°, but its influence extended to much higher latitudes. Reverse shocks bounding the equatorial CIR were seen as far south as -58.2°. High-latitude compressional waves showed no clear correlation with that CIR. Speed and density patterns show that solar rotational modulation persisted up to 25° poleward of the slow wind. Compressional structures at highest latitudes were probably driven by spatial or temporal variations within the southern coronal hole.