Richness distribution of string-seeded Abell clusters - accretion by a loop versus hierarchical clustering

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165877· OSTI ID:5293108

Zurek, W H

Heuristic derivations of the distribution of masses of virialized objects seeded by individual loops of cosmic string in various asymptotic variants of the cosmic string scenario are presented. It is found that the cold dark matter model with loops sufficiently small to act as point masses and with inception times roughly equal to t(eq) has the best chance of accounting for the observed richness distribution of Abell clsuters. The problem of accretion by a point mass is described and solved, and the resulting distribution of Abell cluster masses is derived. The richness distribution is compared with the prediction of hierarchical clustering scenarios, and the implications of the results for cosmic string scenarios and for calculations of cosmic string tension and Abell cluster density are discussed. 43 references.

• Research Organization: Los Alamos National Lab., NM (USA)
• OSTI ID: 5293108
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 324; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

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