Photospheric magnetic vortex structures

Shelyag, Sergiy, Fedun, Viktor, Keenan, Francis, Erdélyi, Robert and Mathioudakis, Mihalis (2011) Photospheric magnetic vortex structures. Annales Geophysicae, 29 (5). pp. 883-887. ISSN 1432-0576

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Official URL: http://dx.doi.org/10.5194/angeo-29-883-2011

Abstract

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.

Item Type: Article
Subjects: F300 Physics
F500 Astronomy
G100 Mathematics
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: Sergiy Shelyag
Date Deposited: 23 May 2016 10:48
Last Modified: 15 May 2017 18:03
URI: http://nrl.northumbria.ac.uk/id/eprint/26904

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