Astrophysics and Space Science

, Volume 24, Issue 2, pp 371–383 | Cite as

Interplanetary sector structure and the helliomagnetic equator

  • Michael Schulz


The magnetohydrodynamics of solar-wind flow lead logically to the formation of one warped annular neutral surface that apparently extends from ≈ 2r (solar radii) to the boundary of the heliosphere. The most likely asymptotic configuration for this neutral sheet intersects the heliomagnetic equatorial plane along four corotating arcs. The observer sees a reversal of magnetic polarity on each crossing of the neutral surface, and so interprets each reversal as the crossing of a sector boundary.


Solar Wind Field Line Interplanetary Magnetic Field Heliocentric Distance Ecliptic Plane 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Ahluwalia, H. S. and Dessler, A. J.: 1962,Planetary Space Sci. 9, 195.CrossRefADSGoogle Scholar
  2. Brandt, J. C.: 1966,Astrophys. J. 144, 1221.CrossRefADSGoogle Scholar
  3. Davis, L.: 1972, in C. P. Sonett, P. J. Coleman, and J. M. Wilcox (eds.),Solar Wind, p. 93, NASA SP-308, Washington.Google Scholar
  4. Dessler, A. J.: 1967,Rev. Geophys. 5, 1.ADSGoogle Scholar
  5. Dessler, A. J. and Michel, F. C.: 1966, in B. M. McCormac (ed.),Radiation Trapped in the Earth's Magnetic Field, Reidel, Dordrecht, p. 447.Google Scholar
  6. Feldstein, Y. I.: 1969,Rev. Geophys. 7, 179.ADSGoogle Scholar
  7. Hundhausen, A. J.: 1970,Rev. Geophys. 8, 729.ADSGoogle Scholar
  8. Ness, N. F.: 1969,Rev. Geophys. 7, 97.ADSGoogle Scholar
  9. Newkirk, G.: 1967,Ann. Rev. Astron. Astrophys. 5, 213.CrossRefADSGoogle Scholar
  10. Newkirk, G.: 1971, in R. Howard (ed.), ‘Solar Magnetic Fields”,IAU Symp.43, 547.Google Scholar
  11. Parker, E. N.: 1958,Astrophys. J. 128, 664.CrossRefADSGoogle Scholar
  12. Pneuman, G. W.: 1966a,Astrophys. J. 145, 242.CrossRefADSGoogle Scholar
  13. Pneuman, G. W.: 1966b,Astrophys. J. 145, 800.CrossRefADSGoogle Scholar
  14. Pneuman, G. W. and Kopp, R. A.: 1971a,Solar Phys. 18, 258.CrossRefADSGoogle Scholar
  15. Pneuman, G. W. and Kopp, R. A.: 1971b, in R. Howard (ed.), ‘Solar Magnetic Fields”,IAU Symp.43, 526.Google Scholar
  16. Roederer, J. G., Hilton, H. H., and Schulz, M.: 1973,J. Geophys. Res. 78, 133.ADSGoogle Scholar
  17. Rosenberg, R. L.: 1970,Solar Phys. 15, 72.CrossRefADSGoogle Scholar
  18. Rosenberg, R. L. and Coleman, P. J.: 1969,J. Geophys. Res. 74, 5611.ADSGoogle Scholar
  19. Russell, C. T. and Brody, K. I.: 1967,J. Geophys. Res. 72, 6104.ADSGoogle Scholar
  20. Schatten, K. H.: 1971, in R. Howard (ed.), ‘Solar Magnetic Fields’,IAU Symp.43, 595Google Scholar
  21. Schulz, M. and Koons, H. C.: 1972,J. Geophys. Res. 77, 248.ADSGoogle Scholar
  22. Strong, I. B. Asbridge, J. R., Bame, S. J., and Hundhausen, A. J.: 1967, in J. L. Weinberg (ed.),The Zodiacal Light and the Interplanetary Medium, p. 365, NASA SP-150, Washington.Google Scholar
  23. Svalgaard, L.: 1972,J. Geophys. Res. 77, 4027.ADSCrossRefGoogle Scholar
  24. Wilcox, J. M.: 1968,Space Sci. Rev. 8, 258.CrossRefADSGoogle Scholar
  25. Wilcox, J. M. and Ness, N. F.: 1965,J. Geophys. Res. 70, 5793.ADSGoogle Scholar

Copyright information

© D. Reidel Publishing Company, Dordrecht-Holland 1973

Authors and Affiliations

  • Michael Schulz
    • 1
  1. 1.Space Physics LaboratoryThe Aerospace CorporationEl SegundoU.S.A.

Personalised recommendations