shelyag-photosphericmagnetic-2011.pdf (924.43 kB)
Photospheric magnetic vortex structures
journal contribution
posted on 2011-05-23, 00:00 authored by Sergiy ShelyagSergiy Shelyag, V Fedun, F P Keenan, R Erdélyi, M MathioudakisUsing 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.
History
Journal
Annales geophysicaeVolume
29Issue
5Pagination
883 - 887Publisher
European Geosciences UnionLocation
Berlin, GermanyPublisher DOI
Link to full text
ISSN
0992-7689eISSN
1432-0576Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2011, AuthorsUsage metrics
Keywords
Solar physicsastrophysicsastronomyMagnetic fieldsPhotosphere and chromosphereNumerical simulation studiesScience & TechnologyPhysical SciencesAstronomy & AstrophysicsGeosciences, MultidisciplinaryMeteorology & Atmospheric SciencesGeologySolar physics, astrophysics, and astronomyTORSIONAL ALFVEN WAVESSOLAR ATMOSPHERESIMULATIONSAtmospheric SciencesGeophysics
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