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Convective overshoot and upper boundary conditions

Published online by Cambridge University Press:  03 August 2017

A. Nesis
A. Nesis*
Affiliation:
Kiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, West-Germany

Abstract

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Calculations of the frequency of solar oscillation are sensitive to the upper boundary conditions of the model. Our investigations of the velocity fields of the overshoot layers (photosphere) have shown that there is a minimum of velocity at about 200 km above τ = 1: We suggest that this minimum provides a natural upper boundary condition for the calculations of solar oscillation. The propagation of sound in these layers has to be regarded as a propagation in a turbulent medium.

Type
Chapter 7: Oscillations in the Solar Atmosphere
Information
Symposium - International Astronomical Union , Volume 123: Advances In Hello- and Asteroseismology , 1988 , pp. 443 - 446
Copyright
Copyright © Reidel 1988 

References

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