Peculiar velocities from cosmic strings

Journal Article · Wed Jul 15 04:00:00 EDT 1987 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.36.335· OSTI ID:6495866

Brandenberger, R; Kaiser, N; Shellard, E P.S.; Turok, N

The peculiar velocities with respect to the uniform Hubble expansion which arise in the cosmic-string theory of galaxy formation are estimated analytically and compared to numerical simulations. In contrast with models of formation of structure based on primordial linear energy-density perturbations with random phases the distribution of velocities in the cosmic-string scenario is highly non-Gaussian. The most likely velocities are approximately scale independent for scales smaller than 50h/sup -1/ Mpc. We discuss both the effects of cosmic-string loops and of wakes. The analytical analysis presented in this paper complements earlier work in which the numerical results were presented.

• Research Organization: Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 9EW, England
• OSTI ID: 6495866
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 36:2; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
640106 -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPOSITE MODELS
COSMOLOGY
ENERGY DENSITY
EXTENDED PARTICLE MODEL
GALACTIC EVOLUTION
GALAXIES
MATHEMATICAL MODELS
MATHEMATICS
MONTE CARLO METHOD
NUMERICAL ANALYSIS
PARTICLE MODELS
PERTURBATION THEORY
QUARK MODEL
STRING MODELS
UNIVERSE