Phase Space — Workshop on
Collisionless Gravitational Dynamics
Zusammenfassung:
The study of galaxies and their dark
matter halo in phase space has become a fundamental tool for exploiting and
interpreting modern astronomical surveys such as GAIA, the SDSS, the 2dF, or
high energy astrophysics experiments, such as Fermi, PAMELA, HESS, etc.
Indeed, understanding the fine details of the dark matter distribution in
phase space is essential both from the numerical and theoretical point of
views in the framework of indirect dark matter detection in high energy
astrophysics. In addition, the knowledge of peculiar motion of stars,
combined for instance with their metallicity, can help to extract very
precise pieces of information on the history of the dynamical structure of
our galaxy and to constrain galaxy formation models in the Cold Dark Matter
paradigm.
With the increasing available computational power, it becomes now possible
considering a realistic numerical approach involving many physical processes
at play over a large dynamical range. In particular, direct resolution of
Vlasov-Poisson equations in 6D phase space has become now possible on
Petaflop computers, as shown recently by recent calculations by plasma
physicists.
The goal of this conference is to discuss all these issues in a convivial
atmosphere. The program will be composed of short talks followed by open
discussions between dynamicists and computer scientists, astrophysicists and
plasma physicists, in order to discuss for instance on how to combine new
ensembles of observational data to exploit them in a dynamical context, or
how to resolve numerically the dynamics of complex systems such as our
galaxy and its halo in phase space.
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