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Application of the Chromospheric Magnetograph to Active Regions

Published online by Cambridge University Press:  14 August 2015

H. Zirin
H. Zirin*
Affiliation:
Hale Observatories, Carnegie Institution of Washington, California Institute of Technology, Pasadena, Calif., U.S.A.

Abstract

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We show how to determine the magnetic field structure in active regions from the Hα morphology. We also show the role of the EFR (emerging flux region) as a bipolar region of velocity downflow. Finally, we point out that since all new magnetic flux emerges in strictly bipolar form, complex spot groups must result from surface interaction, hence most of the solar surface field may be produced on the surface.

Information

Type
Part III: Observations of Sunspot and Active Region Magnetic Fields
Information
Symposium - International Astronomical Union , Volume 43: Solar Magnetic Fields , 1971 , pp. 237 - 242
Copyright
Copyright © Reidel 1971 

References

Bruzek, A.: 1967, in Kiepenheuer, K. O. (ed.), ‘Structure and Development of Solar Active Regions’, IAU Symp. 35, 293.Google Scholar
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Veeder, G. and Zirin, H.: 1970, Solar Phys. 12, 391.CrossRefGoogle Scholar
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Zirin, H.: 1970, Paper presented to Royal Society Special Discussion on Solar Studies.Google Scholar