Physics of solar-like oscillations |
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| Authors: | JØrgen Christensen-Dalsgaard |
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| Institution: | (1) Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, and Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark |
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| Abstract: | The physics of solar and stellar oscillations determines their observable properties: frequencies, amplitudes, lifetimes,
line asymmetries and phase relations. In the solar case these quantities have been measured, often with high precision, and
much has been learned about the properties of the solar interior, and the properties of the oscillations. With recent advances
in observational techniques, such seismic investigations are now being extended to solar-like oscillations in distant stars.
I provide a brief overview of the basic properties of stellar oscillations, and of the information about stellar properties
that may be inferred from them, concentrating mostly on the low-degree modes for which information may be expected for distant
stars. In addition, I consider the current state of investigations of solar-like oscillations in other stars, and the prospects
for an improved understanding of the physics of such oscillations. |
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