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| Titel |
MHD waves generated by high-frequency photospheric vortex motions |
| VerfasserIn |
V. Fedun, S. Shelyag, G. Verth, M. Mathioudakis, R. Erdélyi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 29, no. 6 ; Nr. 29, no. 6 (2011-06-16), S.1029-1035 |
| Datensatznummer |
250017036
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| Publikation (Nr.) |
 copernicus.org/angeo-29-1029-2011.pdf |
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| Zusammenfassung |
| In this paper, we discuss simulations of MHD wave generation and propagation through a three-dimensional
open magnetic flux tube in the lower solar atmosphere. By using self-similar analytical solutions
for modelling the magnetic field in Cartesian coordinate system, we have constructed a
3-D magnetohydrostatic configuration which is used as the initial condition
for non-linear MHD wave simulations. For a driver we have implemented a high-frequency vortex-type motion at
the footpoint region of the open magnetic flux tube. It is found that the implemented swirly source is able to excite
different types of wave modes, i.e. sausage, kink and torsional Alfvén modes.
Analysing these waves by magneto-seismology tools could provide insight into the magnetic structure of the
lower solar atmosphere. |
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