Large Scale Structure by Global Monopoles and Cold Dark Matter

Abstract

A cosmological model in which the primordial perturbations are provided by global monopoles and in which the dark matter is cold has several interesting features. The model is normalized by choosing its single parameter within the bounds obtained from gravitational wave constraints and by demanding coherent velocity f1ows of about 600km/sec on scales of $50 h^{-1} Mpc$. Using this normalization, the model predicts the existence of dominant structures with mass $2\times 10^{16} M_\odot$ on a scale $35 h^{-1}Mpc$ i.e. larger than the horizon at $t_{eq}$. The magnitude of the predicted mass function in the galactic mass range is in good agreement with the observed Schechter function.