Monday, June 9 - Plenary Session
Name: Laurent Gizon
Affiliation: Max Planck Institute for Solar System Research and University of Goettingen, Germany
Title:
Helioseismology in a stellar context: from SDO to PLATO
Abstract:
Full-disk observations of solar oscillations by the Solar Dynamics
Observatory have led to renewed efforts to probe the complex internal
dynamics of the solar convection zone. Besides differential rotation, I will
review other important dynamo ingredients that are now being inferred by
helioseismology, such as meridional circulation, convective motions, or
subsurface emerging magnetic flux. Reliable helioseismic inferences will be
key to understanding the origin of solar activity. A plausible dynamo model
must be accurate enough to satisfy the Sun's constraints and it must be
general enough to fit a sample of sufficiently diverse stars. Solar results
complement observational advances in stellar physics, including
asteroseismic measurements of internal rotation with CoRoT and Kepler.
Well-defined relationships between stellar activity and stellar internal
properties ought to be revealed by the recently-selected mission PLATO,
which will enable the asteroseismology of 85000 cool dwarfs.