Cosmic-string-seeded structure formation
Journal
Physical Review Letters
Journal Volume
81
Journal Issue
10
Pages
2008-2011
Date Issued
1998
Author(s)
Abstract
We describe the results of high-resolution numerical simulations of string-induced structure formation in open universes and those with a nonzero cosmological constant. For models with Γ = Ωh = 0.1-0.2 and a cold dark matter background, we show that the linear density fluctuation power spectrum has both an amplitude at 8h−1 Mpc, σ8, and an overall shape which are consistent within uncertainties with those currently inferred from galaxy surveys. The cosmic string scenario with hot dark matter requires a strongly scale-dependent bias in order to agree with observations. © 1998 The American Physical Society.
Type
journal article