Realistic Numerical Modeling of Solar Magnetoconvection and Oscillations

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dc.creatorKitiashvili, Irina
dc.creatorJacoutot, Laetitia
dc.creatorKosovichev, Alexander
dc.creatorWray, Alan
dc.creatorMansour, Nagi
dc.date2009-01-27
dc.date2009-01-29
dc.date.accessioned2026-07-07T12:35:07Z
dc.date.available2026-07-07T12:35:07Z
dc.descriptionWe have developed 3D, compressible, non-linear radiative MHD simulations to study the influence of the magnetic field of various strength and geometry on the turbulent convective cells and on the excitation mechanisms of the acoustic oscillations. The results reveal substantial changes of the granulation structure with increased magnetic field, and a frequency-dependent reduction in the oscillation power. These simulation results reproduce the enhanced high-frequency acoustic emission observed at the boundaries of active region ("acoustic halo" phenomenon). In the presence of inclined magnetic field the solar convection develops filamentary structure with flows concentrated along magnetic filaments, and also exhibits behavior of running magnetoconvective waves, resembling recent observations of the sunspot penumbra dynamics from Hinode/SOT.
dc.description4 pages,3 figures, submitted to Proc. of 2nd Hinode Science Meeting, Boulder, 2008
dc.identifierhttps://arxiv.org/abs/0901.4369
dc.identifierhttp://arxiv.org/abs/0901.4369
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217672
dc.subjectSolar and Stellar Astrophysics
dc.titleRealistic Numerical Modeling of Solar Magnetoconvection and Oscillations
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