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Astron. Astrophys. 322, 982-984 (1997)
Comments on the "analytic theory of p modes" by Dzhalilov and Staude
Y. Zhugzhda 1, 2 and
M. Stix 1
1 Kiepenheuer-Institut für Sonnenphysik,
Schöneckstr. 6, D-79104 Freiburg, Germany
2 Institute of Terrestrial Magnetism, Ionosphere and Radio
Wave Propagation of the Russian Academy of Sciences, Troitsk city,
Moscow Region, 142092 Russia
Received 1 March 1996 / Accepted 2 December 1996
Abstract
Dzhalilov & Staude (1995; hereinafter DS) have proposed a new "analytic theory" of p modes for the atmospheres of the Sun and Sun-like stars, which explains the p-mode spectrum in terms of "resonant transmission" of acoustic waves. It is shown that this result is mistaken because of an incorrect fit of the piecewise analytic solutions at the boundaries between the diverse layers of the atmosphere. Apart from this incorrect treatment of wave propagation, the interpretation in terms of resonant transmission appears to arise from a mix-up of resonance and interference phenomena. There is also some confusion about the concepts of tunnel effect and turning point.
Key words: hydrodynamics 
Sun: atmosphere
Sun:
oscillations
stars: oscillations
Send offprint requests to: Y. Zhugzhda
Contents
- 1. Introduction
- 2. Resonant transmission of waves
- 3. Acoustic waves in a "piecewise atmosphere"
- 4. Wave propagation in a stratified atmosphere
- 5. Where is the turning point of p modes?
- 6. Tunnel effect and wakes
- 7. Discussion and conclusions
- Acknowledgements
- References
© European Southern Observatory (ESO) 1997
Online publication: June 5, 1998
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