Multi-Dimensional processes in stellar physics

 

This school is dedicated to teaching the physics and the computation of multi-dimensional processes in stars such as those induced by rotation, thermal convection, double diffusive instabilities or magnetism.

The recent progresses of high perfomance computing and as well as those of numerical methods allow us to model stars beyond the traditional one-dimensional - spherically symmetric - models. Besides, our vision of stellar interiorshas been renewed with asteroseismic data from CoRoT and Kepler missions, while new constraints on fundamentals parameters of stars are now provided by GAIA. Moreove, instruments like spectropolarimeters, like NARVAL, ESPADONS or very soon SPIROU, or interferometers like PIONIER and GRAVITY at VLTI, give or will give multi-D data.

Making science out of these data requires a deep understanding of dynamic or magnetic processes happening inside stars. It also requires mastering the numerical tools that permit their modelling.

This school is organised around 4 main lectures, topped off seminars introducing related subjects like multi-dimensional asteroseimology, simulations of supernovae or dynamos, numerical methods with implicit schemes, etc. (see programme). Hands-on work on four public domain codes, namely DEDALUS, ESTER, MAGIC and PENCIL, is also programmed in to order for students to get acquainted with these tools.

 

 

Lectures

  • Rotation and stellar magnetism - Matt Browning (Exeter - UK)
  • Double-diffusive instabilities - Pascale Garaud (Santa-Cruz - USA)
  • Thermal convection in stars and in their atmosphere - Friedrich Kupka (Göttingen - Germany)
  • Turbulence in radiative zones - François Lignières (Toulouse - France)

 

 

 

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