Abstract
Over the last 25 years helioseismology has tremendiously increased our knowledge about the physical properties of the Sun. Precise measurements of the oscillations on the solar surface are carried out with worldwide networks of observing stations as well as dedicated space experiments. These seismic investigations of the Sun are the only possibility to derive information about the solar interior. Asteroseismology continues this success by investigating stellar interiors.

European science has the lead in this important field of astrophysics with various active research groups. However, these groups require networking activities in order to structure and rationalize their efforts. In the next years various innovative experiments will start delivering data that allow expecting exciting scientific results about solar and stellar interiors.

An unheard volume of data will be colleted by new space experiments aboard the Solar Dynamics Observatory, the asteroseismic mission COROT, and high-tech ground-based observatories.

European science requires the best intellectual integration to efficiently structure the investigations that makes use of these data.

Project website
http://www.helas-eu.org

Start
1 April 2006
End
31 March 2010

Funding Institution
European Commission