Oscillations and stationary motions in filaments

Astronomy and Astrophysics – Astronomy

Scientific paper

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Solar Oscillations, Solar Prominences, Chromosphere, H Alpha Line, Solar Corona, Solar Velocity

Scientific paper

Observation of oscillations in filaments, which are cold magnetic structures suspended in the corona, are used to test theories of coronal heating by acoustic waves high in the atmosphere. Long lived stationary motions observed in filaments suggest exchanges of material between them and the surrounding corona. A coupling between upflows in filaments and subphotospheric convective motions, dragging the field lines of the prominence magnetic support, is possible.

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