Oscillations of longitudinally density stratified coronal loops
نویسنده
چکیده
The oscillations and wave propagation is studied in a cylindrical model of coronal loops that undergoes a longitudinal density stratification. Equations of motion are expressed by second order differential equations that are separable into radial and transverse components. The radial equation is solved in thin tube regime. The transverse equation is solved both by perturbation method, for small density scale heights, and numerically, otherwise.
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اثر غیر یکنواختی طولی چگالی بر وجوه نوسانی در حلقه‌های تاج خورشید
We investigate the influence of longitudinal structuring on the fast kink modes of the coronal loops oscillations. Using a simple longitudinal exponential density structure, an analytical dispersion relation is derived. The properties of oscillatory periods and mode profiles and their deviations for such stratified structure are compared with those of the homogeneous tubes. Also, the effects of...
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