Ulysses solar wind plasma observations from peak southerly latitude through perihelion and beyond

摘要

We present Ulysses solar wind plasma data from the peak southerly latitude of (minus)80.2(degrees) through +64.9(degrees) latitude on June 7, 1995. Ulysses encountered fast wind throughout this time except for a 43(degrees) band centered on the solar equator. Median mass flux was nearly constant with latitude, while speed and density had positive and negative poleward gradients, respectively. Solar wind momentum flux was highest at high latitudes, suggesting a latitudinal asymmetry in the heliopause cross section. Solar wind energy flux density was also highest at high latitudes.