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The Magnetic Structure of Plages

Published online by Cambridge University Press:  14 August 2015

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

Extract

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Every sunspot group is surrounded by regions of weaker magnetic field; traditionally those parts which appear in emission in resonance lines are called plages. There is a more extensive region of enhanced magnetic field which is not bright because the magnetic field is horizontal; this region is easily discernible by dark horizontal fibrils in Hα and is included in our discussion. The plage includes most of the magnetic field in an active center and is the locus of most of the flares.

Type
Part V: The Chromosphere in Active Regions
Information
Symposium - International Astronomical Union , Volume 56: Chromospheric Fine Structure , 1974 , pp. 161 - 175
Copyright
Copyright © Reidel 1974 

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