PLASMA WAVE OBSERVATIONS FROM THE ULYSSES SPACECRAFT’S FAST HELIOGRAPHIC LATITUDE SCAN

Plasma wave observations obtained by the Ulysses spacecraft in 1994 and 1995 over a heliographic latitude range of-70 to +70 ” show significantly different wave characteristics inside and outside the streamer belt. Langmuir wave bursts are most commonly found in magnetic holes, especially in fast solar wind. The intensities of ion-acoustic-like waves are reduced at high latitudes. Low frequency electrostatic wave levels show variations that may correlate with solar wind velocity. The maximum levels of whistler waves are correlated with magnetic field magnitude. Published by Elsevier Science Ltd on behalf of COSPAR