The inner structure of Zeldovich ’ pancakes

  title={The inner structure of Zeldovich ’ pancakes},
  author={Erik Aurell and Duccio Fanelli and Sergey N. Gurbatov and Alexey Moshkov},
The evolution of a planar perturbation in a Einstein-de Sitter Universe is studied using a previously introduced Lagrangian scheme. An approximate discrete dynamical system is derived, which describes the mass agglomeration process qualitatively. Quantitative predictions for the late density profile are obtained therefrom, and validated by numerical simulations. The main result is a scaling regime for the density profile of a collapsing object of mass M around cosmological coordinate r∗, ρ(r… CONTINUE READING