Stochastic excitation of gravity waves by overshooting convection in solar-type stars

Details Stochastic excitation of gravity waves by overshooting convection in solar-type stars Stochastic excitation of gravity waves by overshooting convection in solar-type stars

2004-03-03

arxiv.org/abs/astro-ph/0403093v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, proceeding of the Porto conference "Asteroseismology Across the HR Diagram", edited by M.J. Thompson, M.S

Scientific paper

The excitation of gravity waves by penetrative convective plumes is investigated using 2D direct simulations of compressible convection. The oscillation field is measured by a new technique based on the projection of our simulation data onto the theoretical g-modes solutions of the associated linear eigenvalue problem. This allows us to determine both the excited modes and their corresponding amplitudes accurately.

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