Hostname: page-component-8448b6f56d-t5pn6 Total loading time: 0 Render date: 2024-04-19T07:44:36.841Z Has data issue: false hasContentIssue false
  • English
  • Français

Time Evolution of the Large-Scale Solar Magnetic Field

Published online by Cambridge University Press:  14 August 2015

Martin D. Altschuler ,
Gordon Newkirk Jr. ,
Dorothy E. Trotter  and
Robert Howard
Martin D. Altschuler
Affiliation:
High Altitude Observatory, National Center for Atmospheric Research*, Boulder, Colo., U.S.A.
Gordon Newkirk Jr.
Affiliation:
High Altitude Observatory, National Center for Atmospheric Research*, Boulder, Colo., U.S.A.
Dorothy E. Trotter
Affiliation:
High Altitude Observatory, National Center for Atmospheric Research*, Boulder, Colo., U.S.A.
Robert Howard
Affiliation:
Hale Observatories, Pasadena, Calif., U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The six years of data from the Mt. Wilson Magnetic Atlas were analyzed in terms of surface harmonics. Between 1959 and 1962 the dominant harmonic corresponded to a dipole lying in the plane of the equator (2 sectors). There was also a significant zonal harmonic in which both solar poles had the same magnetic polarity, opposite to that at the equator. From the end of 1962 through 1964, the harmonic corresponding to 4 sectors was dominant. In 1965 and 1966, the harmonic of the north-south dipole became significant.

Type
Part VI: Optical and Radio Observations of Large Scale Magnetic Fields on the Sun
Information
Symposium - International Astronomical Union , Volume 43: Solar Magnetic Fields , 1971 , pp. 588 - 594
Copyright
Copyright © Reidel 1971 

References

Altschuler, M. D. and Newkirk, G. Jr.: 1969, Solar Phys. 9, 131.Google Scholar
Chapman, S. and Bartels, Jr.: 1940, Geomagnetism , Clarendon Press, Oxford.Google Scholar
Howard, R., Bumba, V., and Smith, S. F.: 1967, Atlas of Solar Magnetic Fields 1959–1966 , Carnegie Institute of Washington, Publication No. 626.Google Scholar
Schmidt, A.: 1895, Abhandl. Bayer. Akad. Wiss. Munchen, II. Classe 19, 1.Google Scholar
Schmidt, A.: 1935, Tafeln der Normierten Kugelfunktionen, Sowie Formeln zur Entwicklung , Gotha, Engelhard-Reyer.Google Scholar
Stenflo, J. O.: 1967, Acta Univ. Lund. Sect. II , No. 35.Google Scholar
Wilcox, J. M. and Ness, N. F.: 1965, J. Geophys. Res. 70, 5793.Google Scholar