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MHD waves generated by high-frequency photospheric vortex motions

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journal contribution
posted on 2011-06-16, 00:00 authored by V Fedun, Sergiy ShelyagSergiy Shelyag, G Verth, M Mathioudakis, R Erdélyi
In this paper, we discuss simulations of MHD wave generation and propagation through a threedimensional 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 highfrequency 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.

History

Journal

Annales geophysicae

Volume

29

Pagination

1029-1035

Location

Berlin, Germany

ISSN

0992-7689

eISSN

1432-0576

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2011, The Authors

Issue

6

Publisher

Copernicus Publications on behalf of the European Geosciences Union