Cosmic string wakes

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165697· OSTI ID:5438162

Stebbins, A; Veeraraghavan, S; Silk, J; Brandenberger, R; Turok, N

Accretion of matter onto wakes left behind by horizon-sized pieces of cosmic string is investigated, and the effects of wakes on the large-scale structure of the universe are determined. Accretion of cold matter onto wakes, the effects of a long string on fluids with finite velocity dispersion or sound speeds, the interactions between loops and wakes, and the conditions for wakes to survive disruption by loops are discussed. It is concluded that the most important wakes are those which were formed at the time of equal matter and radiation density. This leads to sheetlike overdense regions of galaxies with a mean separation in agreement with the scale of the bubbles of de Lapparent, Geller, and Huchra (1986). However, for the value of G(mu) favored from galaxy formation considerations in a universe with cold dark matter, a wake accretes matter from a distance of only about 1.5 Mpc, which is much less than the distance between the wakes. 39 references.

• Research Organization: California Univ., Berkeley (USA); Fermi National Accelerator Lab., Batavia, IL (USA); Cambridge Univ. (England); Imperial College of Science and Technology, London (England)
• OSTI ID: 5438162
• Journal Information: Astrophys. J.; (United States), Vol. 322
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMOLOGY
STRING MODELS
UNIVERSE
MASS DISTRIBUTION
DENSITY
GALACTIC EVOLUTION
GALAXY CLUSTERS
NONLUMINOUS MATTER
COMPOSITE MODELS
DISTRIBUTION
EXTENDED PARTICLE MODEL
MATHEMATICAL MODELS
PARTICLE MODELS
PHYSICAL PROPERTIES
QUARK MODEL
SPATIAL DISTRIBUTION
640106* - Astrophysics & Cosmology- Cosmology