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Subject will be restored when possible View all abstracts by submitter

Inigo Arregui   Submitted: 2007-08-28 07:26

The theory of magnetohydrodynamic (MHD) waves in solar coronal slabs in a zero-eta configuration and for parallel propagation of waves does not allow the existence of surface waves. When oblique propagation of perturbations is considered both surface and body waves are able to propagate. When the perpendicular wave number is larger than a certain value, the body kink mode becomes a surface wave. In addition, a sausage surface mode is found below the internal cut-off frequency. When non-uniformity in the equilibrium is included, surface and body modes are damped due to resonant absorption. In this paper, first, a normal-mode analysis is performed and the period, the damping rate, and the spatial structure of eigenfunctions are obtained. Then, the time-dependent problem is solved, and the conditions under which one or the other type of mode is excited are investigated.

Authors: I. Arregui, J. Terradas, R. Oliver, J.L. Ballester
Projects: None

Publication Status: Solar Physics. Accepted
Last Modified: 2007-08-30 21:46
Go to main E-Print page  Magnetohydrodynamics wave propagation in the neighbourhood of two dipoles  Subject will be restored when possible  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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