Large-scale structure from cosmic string loops. I - Formation and linear evolution of perturbations

Abstract

view Abstract Citations (18) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Large-Scale Structure from Cosmic String Loops. I. Formation and Linear Evolution of Perturbations Scherrer, Robert J. Abstract A numerical model for the formation of large-scale structure from cosmic string loops is presented. The configuration of cosmic strings at the end of the epoch of equal matter and radiation is discussed, giving a numerical model for this configuration. A model is presented for the linear evolution of the perturbations induced by these loops, and the perturbation spectrum which exists before the perturbations go nonlinear is analyzed. The model produces a non-Gaussian fluctuation spectrum with nonrandom phases. The power at large scales is suppressed by the loop perturbations being isocurvature fluctuations. There are no long-range Brownian correlations between loops which fragment from the same infinite string. These factors inhibit the formation of structure on large scales. Publication: The Astrophysical Journal Pub Date: September 1987 DOI: 10.1086/165519 Bibcode: 1987ApJ...320....1S Keywords: Astronomical Models; Cosmology; Galactic Evolution; Linear Evolution Equations; Loops; Perturbation Theory; Computational Astrophysics; Domains; Early Stars; Gauge Theory; Power Spectra; Universe; Astrophysics; COSMOLOGY; EARLY UNIVERSE; GALAXIES: FORMATION full text sources ADS |