Speaker
Description
The solar atmosphere and magnetic field are highly structured and dynamic. Jet-like features such as spicules move from the photosphere to the lower corona while solar flares cause heating of the plasma in the chromosphere leading to volume expansion within coronal loops. These two phenomena are often simulated with a pulse driven from the photosphere into a vertical magnetic field and stratified solar atmosphere. In this study, an initial numerical investigation of a localised pulse-driven behaviour is carried out using Lare2d in a realistic solar atmosphere to examine its response to the driver. Lare2d is a numerical magnetohydrodynamics code that solves the MHD equations in two dimensions using a Lagrangian remap scheme on a staggered grid. The initial model is constructed from a vertically stratified atmosphere with prescribed temperature, density and gravity profiles chosen to produce a hydrostatic background state. This investigation forms part of a broader study of physical processes in the sun. Here we present simplified numerical experiments to test the robustness of the solar atmosphere, the treatment of boundary conditions, and the behaviour of different drivers.
| Apply for student award at which level: | PhD |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |