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Configuration and Evolution of Solar Magnetic Fields

Published online by Cambridge University Press:  25 April 2016

D. Schatz*
Affiliation:
Division of Physics, CSIRO, Sydney

Extract

Observations were made on 1970 February 9 using the Culgoora magnetograph to study the configuration and evolution of magnetic fields in a solar active region with high time resolution. The region observed was located at N20 E25 at the beginning of the observations which commenced at February 8, 22h 59m U.T. and finished at February 9, 07h 24 m. The magnetic fields were observed in the light of Cal 6102.7Å. Over a wavelength range corresponding to an intensity from 1/8 to 1/2 of the way up from line centre to the continuum on the blue side of the Une there is no apparent change in the field configuration, and the observations were made at a wavelength corresponding to the mid-point of this range. Exposures were made approximately every two minutes, with occasional large time gaps for instrumental adjustments.

Type
Contributions
Copyright
Copyright © Astronomical Society of Australia 1970

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References

1 Bray, R. J. and Loughhead, R. E., ‘The Solar GranulationChapman and Hall, London 1967, pp. 5361.Google Scholar
2 Chapman, G. A. and Sheeley, N. R., Solar Physics. 4, 283 (1969).Google Scholar
3 Giovanelli, R. G., Proc. ASA, 1, 363 (1970).Google Scholar