Computer Science
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.305..196c&link_type=abstract
Nature (ISSN 0028-0836), vol. 305, Sept. 15, 1983, p. 196-198.
Computer Science
110
Computerized Simulation, Cosmology, Mass Distribution, Particle In Cell Technique, Three Dimensional Models, Universe, Covariance, Dark Matter, Poisson Equation
Scientific paper
High and low density cloud-in-cell models were used to simulate the nonlinear growth of adiabatic perturbations in collisionless matter to demonstrate the development of a cellular structure in the universe. Account was taken of a short wvelength cutoff in collisionless matter,with a focus on resolving filaments and low density pancakes. The calculations were performed with a Friedmann-Robertson-Walker model, and the gravitational potential of dark matter was obtained through solution of the Poisson equation. The simulation began with z between 100-1000, and initial particle velocities were set at zero. Spherically symmetric voids were observed to form, then colide and interact. Sufficient particles were employed to avoid depletion during nonlinear collapse. No galaxies formed during the epoch studied, which has implications for the significance of dark, baryonic matter in the present universe.
Centrella Joan
Melott Adrian L.
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