MHD waves generated by high-frequency photospheric vortex motions

V. Fedun; S. Shelyag; G. Verth; M. Mathioudakis; R. Erdélyi

doi:10.5194/angeo-29-1029-2011

MHD waves generated by high-frequency photospheric vortex motions

V. Fedun^*, S. Shelyag, G. Verth, M. Mathioudakis, R. Erdélyi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

19 Downloads (Pure)

Abstract

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.

Original language	English
Pages (from-to)	1029-1035
Number of pages	7
Journal	Annales Geophysicae
Volume	29
Issue number	6
DOIs	https://doi.org/10.5194/angeo-29-1029-2011
Publication status	Published - 16 Jun 2011

Bibliographical note

Publisher Copyright:
© Author(s) 2011.

Keywords

And astronomy (Photosphere and chromosphere)
Astrophysics
Solar physics

ASJC Scopus subject areas

Astronomy and Astrophysics
Geology
Atmospheric Science
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science

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10.5194/angeo-29-1029-2011Licence: CC BY

MHD waves generated by high-frequency photospheric vortex motions
Copyright 2011 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 2.98 MBLicence: CC BY

Cite this

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title = "MHD waves generated by high-frequency photospheric vortex motions",

abstract = "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 Alfv{\'e}n modes. Analysing these waves by magneto-seismology tools could provide insight into the magnetic structure of the lower solar atmosphere.",

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author = "V. Fedun and S. Shelyag and G. Verth and M. Mathioudakis and R. Erd{\'e}lyi",

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T1 - MHD waves generated by high-frequency photospheric vortex motions

AU - Fedun, V.

AU - Shelyag, S.

AU - Verth, G.

AU - Mathioudakis, M.

AU - Erdélyi, R.

PY - 2011/6/16

Y1 - 2011/6/16

N2 - 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.

AB - 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.

KW - And astronomy (Photosphere and chromosphere)

KW - Astrophysics

KW - Solar physics

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IS - 6

ER -

MHD waves generated by high-frequency photospheric vortex motions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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