3D Numerical Simulations of fMode Propagation Through Magnetic Flux Tubes 

Khalil Daiffallah Submitted: 20100902 04:39
Threedimensional numerical simulations have been used to study the scattering of a surfacegravity wave packet by vertical magnetic flux tubes, with radii from 200 km to 3 Mm, embedded in stratified polytropic atmosphere. The scattered wave was found to consist primarily of m=0 (axisymmetric) and m=1 modes. It was found that the ratio of the amplitude of these two modes is strongly dependant on the radius of the flux tube: The kink mode is the dominant mode excited in tubes with a small radius while the sausage mode is dominant for large tubes. Simulations of this type provide a simple, efficient and robust way to start understanding the seismic signature of flux tubes, which have recently began to be observed.
Authors: K. Daiffallah, T. Abdelatif, A. Bendib, R. Cameron, L. Gizon
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Publication Status: Published in Solar Physics (2011), 268, 309320.
Last Modified: 20130717 10:54




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