Morphology of H-alpha filaments and filament channel systems |
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| Authors: | Makarov V I Stoyanova M N Sivaraman K R |
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| Institution: | (1) The Kislovodsk Station of the Pulkovo Observatory, 357741 Kislovodsk, USSR;(2) Indian Insitute of Astrophysics, 560034 Bangalore |
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| Abstract: | Ring-like filaments have been detected on the spectroheliograms in the H-alpha line. Inside these filaments the magnetic field
flux has a predominant polarity. Some of the dark filaments are connected by filament channels which can be seen at the limb
either as (a) weak prominences or (b) dense low chromospheric features or (c) multi-channel system of matter flow between
two prominences or (d) common quiescent prominences. The filament and the filament channel together form a continuous closed
contour and outline the region of thef polarity particularly at the beginning of the solar cycle. The change in sign of the polar field of the Sun is associated
with the drift of the filament band to high latitudes. |
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| Keywords: | Sun magnetic fields filaments filament channel |
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