Orateur
Stéphane Colombi
Description
In the standard picture of cosmic structure formation, the first dark matter objects to form are expected to be microhalos of roughly Earth mass and solar system size. In this framework I will discuss how pancakes seed these primordial structures and how dark matter microhalos emerge through violent relaxation and the appearance of a power-law prompt cusp, then grow and relax to the so-called Navarro Frenk and White profile through subsequent infall and mergers.
