Forward Modeling In Helioseismology: Sensitivities, Realization Noise Subtraction And Kernels

Details Forward Modeling In Helioseismology: Sensitivities, Realization Noise Subtraction And Kernels Forward Modeling In Helioseismology: Sensitivities, Realization Noise Subtraction And Kernels

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.4601h&link_type=abstract

American Astronomical Society Meeting 210, #46.01; Bulletin of the American Astronomical Society, Vol. 39, p.160

Computer Science

Sound

Scientific paper

Simulations of the acoustic wavefield in the Sun are useful in the context of validating results of local helioseismology and to place bounds on the detectability of various perturbations. Through a series of numerical calculations in cartesian and spherical geometry, we determine the sensitivities of acoustic waves to various flow and thermal perturbations in the deep interior and shallow layers of the Sun. The concept of realization noise subtraction is applied to increase the signal to noise ratios in the simulations. Using techniques of time-distance helioseismology, kernels for sound-speed perturbations, damping and source anomalies are extracted from the artificial data as well. These results will be presented.

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