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| Titel |
Photospheric magnetic vortex structures |
| VerfasserIn |
S. Shelyag, V. Fedun, F. P. Keenan, R. Erdélyi, M. Mathioudakis |
| 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. 5 ; Nr. 29, no. 5 (2011-05-23), S.883-887 |
| Datensatznummer |
250017022
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| Publikation (Nr.) |
 copernicus.org/angeo-29-883-2011.pdf |
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| Zusammenfassung |
| Using direct numerical magneto-hydrodynamic (MHD) simulations, we demonstrate the evidence of two physically
different types of vortex motions in the
solar photosphere. Baroclinic motions of plasma in non-magnetic granules are the primary source of vorticity
in granular regions of the solar photosphere, however, there is a significantly more efficient mechanism of
vorticity production in strongly magnetised intergranular lanes. These swirly motions of plasma in intergranular
magnetic field concentrations could be responsible for the generation of different types of MHD wave modes,
for example, kink, sausage and torsional Alfvén waves. These waves could transport a relevant amount of
energy from the lower solar atmosphere and contribute to coronal plasma heating. |
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