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The formation, structure and changes in filaments in active regions

Published online by Cambridge University Press:  14 August 2015

Sara F. Smith
Sara F. Smith*
Affiliation:
Lockheed Solar Observatory, Calif., U.S.A.

Extract

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During periods of good image quality the large-scale films of the Lockheed Solar Observatory obtained during 1966 and 1967 have proven to be especially useful for studying filaments and their relationship to the Hα fine structure observed in active regions. Structures with dimensions on the order of 1 sec of arc can frequently be resolved, as illustrated in Figure 1. The ‘solar vortices’ are clearly resolved into numerous individual fibrils. Bright Hα plage is resolved into a fine granular structure resembling the solar granulation. Filaments are usually seen as irregular dense collections of material which are occasionally resolved into finer striations which run parallel to the path of the filaments.

Type
Part III: Optical Structure of an Active Region
Information
Symposium - International Astronomical Union , Volume 35: Structure and Development of Solar Active Regions , 1968 , pp. 267 - 279
Copyright
Copyright © Reidel 1968 

References

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