Speaker
Jens Stücker
(Universität Wien)
Description
Measurements of the presence or the absence of dark substructures of the Milky Way -- e.g. through their impact on stellar streams -- are a powerful probe of the nature of dark matter. However, the necessary theoretical predictions are tricky, since subhaloes of the Milky Way get significantly diminished through tidal stripping -- which depends on aspects that may be unresolved or unmodelled in most cosmological simulations.
In this talk, I will give an overview over the theory, the modelling and the pitfalls of tidal stripping and tidal shocks. Further, I will discuss a novel analytical approach, based on the conservation of actions, that allows to predict the long-term fate of substructures from first principles.
Primary author
Jens Stücker
(Universität Wien)
