Computer Science – Sound
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21631906c&link_type=abstract
American Astronomical Society, AAS Meeting #216, #319.06; Bulletin of the American Astronomical Society, Vol. 41, p.910
Computer Science
Sound
Scientific paper
We will discuss recent progress in modeling the interaction of helioseismic waves with magnetic fields and thermal perturbations. We employ a background model that is translation-invariant in the horizontal directions, has a realistic stratification in the vertical direction, and includes uniform, inclined magnetic fields. Physically consistent boundary conditions for the waves are implemented at the upper and lower boundaries of the model. Using this model we generate synthetic data and subsequently measure time-distance travel times. We will show the sensitivity of these travel times to magnetic fields and changes in sound speed. We will show the effect of magnetic fields on inversions for wave speed. We will discuss how these results relate to the local heliseismology of sunspots. This work is supported by NASA contracts NNH09CE41C and NNG07EI51C.
Birch Aaron
Braun Daniel
Crouch Ashley D.
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