On the propagation of non stationary pressure waves in stellar interiors

Details On the propagation of non stationary pressure waves in stellar interiors On the propagation of non stationary pressure waves in stellar interiors

2004-06-17

arxiv.org/abs/astro-ph/0406382v2

Acta Phys.Polon. B35 (2004) 2479-2492

Astronomy and Astrophysics

Astrophysics

14 pages, corrected typos, abstract changed

Scientific paper

An analysis of the propagation of non stationary waves in the adiabatic region of stellar interior is presented. An equation of motion with an effective potential is derived, similar to the Zerilli equation known in the propagation of gravitational waves. The Huyghens principle is violated in this case and the energy diffusion outward null cones is expected. Numerical calculations demonstrate that the diffusion is weak for the case of standard Solar model; thus no significant effect corresponding to quasinormal modes can be expected. The likely reason for the absence of stronger features is the restriction of our analysis to adiabatic regions only, where the breakdown of the Huyghens principle is insignificant.

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