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Morphological relationships in the chromospheric Hα fine structure

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Abstract

A continuous relationship is proposed between the basic elements of the dark fine structure of the quiet and active chromosphere. A progression from chromospheric bushes to fibrils, then to chromospheric threads and active region filaments, and finally to diffuse quiescent filaments, is described. It is shown that the horizontal component of the field on opposite sides of an active region quiescent filament can be in the same direction and closely parallel to the filament axis. Consequently, it is unnecessary to postulate twisted or otherwise complex field configurations to reconcile the support mechanism of filaments with the observed motion along their axis.

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Foukal, P. Morphological relationships in the chromospheric Hα fine structure. Sol Phys 19, 59–71 (1971). https://doi.org/10.1007/BF00148824

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  • DOI: https://doi.org/10.1007/BF00148824

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