The heliospheric magnetic field at solar minimum: Ulysses observations from pole to pole

R. J. Forsyth, A. Balogh, T. S. Horbury, G. Erdős, E. J. Smith, M. E. Burton

Research output: Contribution to journalArticle

95 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)287-295
Number of pages9
JournalAstronomy and Astrophysics
Volume316
Issue number2
Publication statusPublished - Dec 10 1996

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poles
magnetic field
Southern Hemisphere
Northern Hemisphere
polar region
magnetic fields
polar regions
heliosphere
transit
hemispheres
azimuth
asymmetry
polarity
spacecraft
configurations

Keywords

  • Interplanetary medium
  • Solar wind
  • Sun: magnetic fields

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Forsyth, R. J., Balogh, A., Horbury, T. S., Erdős, G., Smith, E. J., & Burton, M. E. (1996). The heliospheric magnetic field at solar minimum: Ulysses observations from pole to pole. Astronomy and Astrophysics, 316(2), 287-295.

The heliospheric magnetic field at solar minimum : Ulysses observations from pole to pole. / Forsyth, R. J.; Balogh, A.; Horbury, T. S.; Erdős, G.; Smith, E. J.; Burton, M. E.

In: Astronomy and Astrophysics, Vol. 316, No. 2, 10.12.1996, p. 287-295.

Research output: Contribution to journalArticle

Forsyth, RJ, Balogh, A, Horbury, TS, Erdős, G, Smith, EJ & Burton, ME 1996, 'The heliospheric magnetic field at solar minimum: Ulysses observations from pole to pole', Astronomy and Astrophysics, vol. 316, no. 2, pp. 287-295.
Forsyth RJ, Balogh A, Horbury TS, Erdős G, Smith EJ, Burton ME. The heliospheric magnetic field at solar minimum: Ulysses observations from pole to pole. Astronomy and Astrophysics. 1996 Dec 10;316(2):287-295.
Forsyth, R. J. ; Balogh, A. ; Horbury, T. S. ; Erdős, G. ; Smith, E. J. ; Burton, M. E. / The heliospheric magnetic field at solar minimum : Ulysses observations from pole to pole. In: Astronomy and Astrophysics. 1996 ; Vol. 316, No. 2. pp. 287-295.
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