Three kinds of waves are looked for by helioseismologists: acoustic waves, for which pressure is the restoring force (these waves generate p modes), gravity waves for which buoyancy is the restoring force (these waves generate g modes), and surface gravity waves (these waves generate f modes).Helioseismologists use both standing wave patterns and propagating waves in their research.
Acoustic waves are bouncing back and forth in the sun creating what we might call a star song. We have studies these kind of waves in the Sun for ages and now, with COROT, we can do the same with other stars learning a lot about their physics.
PlanetBye is a blog run by Bente Lilja Bye aka Stellare. PlanetBye covers mainly scientific topics but also completely random topics like art, social media, personal ramblings etc. The posts on this blog are generally short with links to further reading and sources of information. Clicking on images is encouraged.
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