Theory of Stellar Oscillations

  • Margarida S. CunhaEmail author
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 49)


In recent years, astronomers have witnessed major progresses in the field of stellar physics. This was made possible thanks to the combination of a solid theoretical understanding of the phenomena of stellar pulsations and the availability of a tremendous amount of exquisite space-based asteroseismic data. In this context, this chapter reviews the basic theory of stellar pulsations, considering small, adiabatic perturbations to a static, spherically symmetric equilibrium. It starts with a brief discussion of the solar oscillation spectrum, followed by the setting of the theoretical problem, including the presentation of the equations of hydrodynamics, their perturbation, and a discussion of the functional form of the solutions. Emphasis is put on the physical properties of the different types of modes, in particular acoustic (p-) and gravity (g-) modes and their propagation cavities. The surface (f-) mode solutions are also discussed. While not attempting to be comprehensive, it is hoped that the summary presented in this chapter addresses the most important theoretical aspects that are required for a solid start in stellar pulsations research.



I am grateful to Ângela Santos for producing Fig. 1 and to Jørgen Christensen-Dalsgaard for producing Fig. 8. This work was supported by Fundação para a Ciência e a Tecnologia (FCT) through national funds (UID/FIS/04434/2013) and by FEDER through COMPETE2020 (POCI-01-0145-FEDER-007672), as well as through the Investigador FCT Contract No. IF/00894/2012/CP0150/CT0004. This work has received funding from EC, under FP7, through the grant agreement FP7-SPACE-2012-312844.


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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Instituto de Astrofísica e Ciências do EspaçoUniversidade do Porto, CAUPPortoPortugal

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