Clues on void evolution III: Structure and dynamics in void shells

Understand

Inspired on the well known dynamical dichotomy predicted in voids, where some underdense regions expand whereas others collapse due to overdense surrounding regions, we explored the interplay between the void inner dynamics and its large scale environment.

• The environment is classified depending on its density as in previous works.
• We analyse the dynamical properties of void-centered spherical shells at different void-centric distances depending on this classification.
• The above dynamical properties are given by the angular distribution of the radial velocity field, its smoothness, the field dependence on the tracer density and shape, and the field departures from linear theory.