Statistics – Computation
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.346..633m&link_type=abstract
Nature (ISSN 0028-0836), vol. 346, Aug. 16, 1990, p. 633-635. Research supported by the University of Kansas, AN SSSR, NASA, NSF
Statistics
Computation
38
Astronomical Models, Cosmology, Galactic Clusters, Gravitational Effects, Computational Astrophysics, Power Spectra, Two Dimensional Models
Scientific paper
The results are presented of a set of high-resolution, two-dimensional simulations of gravitational clustering of large-scale cosmological structures, starting from Gaussian initial conditions. Such a distribution, in which the phases of the Fourier components of the density fluctuations are distributed randomly, is the 'least special' of initial stages, and is believed to have a physical origin in quantum noise in the early universe. Results from simulations in which the power spectra are varied but the initial phases are kept the same are systematically compared, and it is argued that filamentary structure is a general result of nonlinear gravitational evolution and requires less power on large scales than has often been believed.
Melott Adrian L.
Shandarin Sergei F.
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