Journal cover Journal topic
Annales Geophysicae Sun, Earth, planets, and planetary systems An interactive open-access journal of the European Geosciences Union
Ann. Geophys., 29, 1029-1035, 2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
16 Jun 2011
MHD waves generated by high-frequency photospheric vortex motions
V. Fedun1, S. Shelyag2, G. Verth3,4, M. Mathioudakis2, and R. Erdélyi1 1Solar Physics & Space Plasma Research Centre (SP2RC), School of Mathematics and Statistics, University of Sheffield, Hicks Building, Hounsfield Rd., Sheffield, S3 7RH, UK
2Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast, BT7 1NN, Northern Ireland, UK
3Centrum voor Plasma Astrofysica and Leuven Mathematical Modelling and Computational Science Centre, KU Leuven, Celestijnenlaan 200B, 3001 Heverlee, Belgium
4School of Computing, Engineering and Information Sciences, Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK
Abstract. 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.

Citation: Fedun, V., Shelyag, S., Verth, G., Mathioudakis, M., and Erdélyi, R.: MHD waves generated by high-frequency photospheric vortex motions, Ann. Geophys., 29, 1029-1035,, 2011.
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