shelyag-mhdwavesgenerated-2011.pdf (2.98 MB)
Download fileMHD waves generated by high-frequency photospheric vortex motions
journal contribution
posted on 2011-06-16, 00:00 authored by V Fedun, Sergiy ShelyagSergiy Shelyag, G Verth, M Mathioudakis, R ErdélyiIn 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 geophysicaeVolume
29Issue
6Pagination
1029 - 1035Publisher
Copernicus Publications on behalf of the 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, The AuthorsUsage metrics
Categories
Keywords
Solar physicsastrophysicsastronomyPhotosphere and chromosphereScience & TechnologyPhysical SciencesAstronomy & AstrophysicsGeosciences, MultidisciplinaryMeteorology & Atmospheric SciencesGeologySolar physics, astrophysics, and astronomyCORONAL LOOP OSCILLATIONSMODE KINK OSCILLATIONSALFVEN WAVESSOLAR ATMOSPHEREMAGNETOHYDRODYNAMIC CODEFLUX TUBESPROPAGATIONSEISMOLOGYMAGNETOSEISMOLOGYSIMULATIONS