Affiliation
Max-Planck-Institut für Sonnensystemforschung
Main category
Natural Sciences (Mathematics)
Alternative category
Natural Sciences (Physics)
Abstract
We compute acoustic Green’s functions in an axisymmetric solar background model, which may include a meridional flow and differential rotation. The wave equation is solved in
the frequency domain using a finite element solver. A transparent boundary condition for the waves is implemented in the chromosphere, which represents a great improvement in
computational efficiency compared to implementations based on ’sponge layers’. We perform various convergence studies that demonstrate that wave travel times can be computed
with an accuracy of 0.001 s. This high level of numerical accuracy is required to interpret travel times in the deep interior, and is achieved thanks to a refined mesh in the near surface
layers and around the source of excitation. The wave solver presented here lays the ground for future iterative inversion methods for flows in the deep solar interior.
Do you have problems viewing the pdf-file? Download poster
here
If the poster contains inappropriate content, please
report the poster. You will be redirected to the landing page.
