Voids and filaments

Abstract

Results of numerical calculations of the gravitational collapse of pregalactic matter have been reported by various investigators. Centrella and Melott (1983) have shown that the typical result of such a collapse is a filamentary structure surrounding sphere-like voids. The present investigation is concerned with the reasons for the roughly spherical form of voids between condensations. It is reaffirmed that the condensations are more likely to be filaments than pancakes. Attention is given to the shape of high- and low-density regions, and hyperboloidal filaments.