Clustering of galaxies by inverse cascade in a turbulent medium

Abstract

A definite physical mechanism based in inverse cascading is suggested which quite naturally yields a bottom-up hierarchical structure for galactic clustering. In this mechanism, nonlinear interactions between small fluid elements in an energetically open nonlinear system facilitate the formation of large coherent stable structures. The clustering of galaxies on all scales is interpreted as the result of this self-organization processes occurring in a turbulent medium.