Accumulation of Filament Material at the Boundaries of Supergranular Cells

Details Accumulation of Filament Material at the Boundaries of Supergranular Cells Accumulation of Filament Material at the Boundaries of Supergranular Cells

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..346..219p&link_type=abstract

Large-scale Structures and their Role in Solar Activity ASP Conference Series, Vol. 346, Proceedings of the Conference held 18-2

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Scientific paper

We use ISOON full disk H-alpha images to study fragmented filaments whose main body consists of non-connected clumps of dark filament material. Fragmented filaments may represent the early evolution of filament development. We describe two filaments that began their formation with a few individual clumps, which later grew and interconnected to form a continuous body typical of a chromospheric filament. We show that there is a tendency for clumps to be situated over the boundaries of supergranular cells. We suggest that this preference in initial accumulation of material above areas of persistent downflows (boundary of supergranules) may be a key in understanding why the chromospheric filaments show a much stronger hemispheric helicity rule than other solar features (e.g. sunspots).

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