Astron. and Astrophys., 316, 297-295, 1996
Abstract:
The fast transit of the Ulysses spacecraft from the south polar
regions of the heliosphere to the north polar regions has allowed us to
obtain a unique perspective on the configuration and properties of the
heliospheric magnetic field at a time of solar minimum activity. We compare
the magnetic field in the northern and southern hemispheres and find no
evidence of asymmetry in the radial component of the field or in the
variances of the field. We find that the magnetic field polarity corresponds
to that observed at the Sun. The only difference between the hemispheres is
that, while magnetic field lines in the southern hemisphere have a most
probable azimuth angle approximately 24° more tightly wound than predicted
by the Parker model, those in the northern hemisphere are in good agreement
with the model.
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