The scattering of acoustic waves by a stellar core as seen in the small frequency separations

Details The scattering of acoustic waves by a stellar core as seen in the small frequency separations The scattering of acoustic waves by a stellar core as seen in the small frequency separations

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.538..403r&link_type=abstract

In: Second Eddington Workshop: Stellar structure and habitable planet finding, 9 - 11 April 2003, Palermo, Italy. Edited by F. F

Physics

3

Sun: Waves, Methods: Numerical, Stars: Oscillations

Scientific paper

The propagation of acoustic waves in the interior of relatively young stars is nearly classical and can be accurately described by ray-tracing techniques. At later stages of evolution, the development of a steep density gradient in the central core leads to wave diffraction and partial wave scattering. Scattering is also produced by a small convective core with a rapid density variation at the boundary. We discuss the signatures of this scattering in the small frequency separations of low-degree p-modes.

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