THE HELIOSPHERIC MAGNETIC-FIELD AT SOLAR MINIMUM - ULYSSES OBSERVATIONS FROM POLE TO POLE

The fast transit of the Ulysses spacecraft from the south polar region s of the heliosphere to the north polar regions has allowed us to obta in a unique perspective on the configuration and properties of the hel iospheric magnetic held at a time of solar minimum activity. We compar e the magnetic field in the northern and southern hemispheres and find no evidence of asymmetry in the radial component of the field or in t he variances of the field. We find that the magnetic field polarity co rresponds to that observed at the Sun. The only difference between the hemispheres is that, while magnetic field lines in the southern hemis phere have a most probable azimuth angle approximately 24 degrees more tightly wound than predicted by the Parker model, those in the northe rn hemisphere are in good agreement with the model.