The Fractal Geometry of the Cosmic Web and Its Formation

Figure 1

Realizations in one or two dimensions of the exact solution of the adhesion model with scale-invariant initial velocity field (). In both, the length scale is arbitrary, due to the self-similarity, so that the relevant scale is the scale of the largest structures. Left-hand side: in one dimension, Lagrangian map from initial to final positions, with multistreaming, and devil’s staircase formed by mass sticking. Right-hand side: web structure of final positions in two dimensions.