Theory of stellar oscillations

• Type: Article in International Conference Proceedings Book
• Date: 2018

Authors

Cunha, MS (Author) FCUP

Conference proceedings International

Title: Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds

Pages: 27-54

IVth Azores International Advanced School in Space Sciences

Azores - Portugal, 17-27 July 2016

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-00N-8QW

DOI: 10.1007/978-3-319-59315-9_2

Abstract (EN): 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. © 2018, Springer International Publishing AG.

Language: English

Type (Professor's evaluation): Scientific