Formation of large-scale structure from cosmic-string loops and cold dark matter

Details Formation of large-scale structure from cosmic-string loops and cold dark matter Formation of large-scale structure from cosmic-string loops and cold dark matter

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.328..691m&link_type=abstract

Nature (ISSN 0028-0836), vol. 328, Aug. 20, 1987, p. 691-694. Research supported by University of Kansas, McCormick Foundation,

Physics

25

Cosmology, Dark Matter, Galactic Evolution, String Theory, Autocorrelation, Particle Motion, Power Spectra, Velocity

Scientific paper

Some results from a numerical simulation of the formation of large-scale structure from cosmic-string loops are presented. It is found that even though G x mu is required to be lower than 2 x 10 to the -6th (where mu is the mass per unit length of the string) to give a low enough autocorrelation amplitude, there is excessive power on smaller scales, so that galaxies would be more dense than observed. The large-scale structure does not include a filamentary or connected appearance and shares with more conventional models based on Gaussian perturbations the lack of cluster-cluster correlation at the mean cluster separation scale as well as excessively small bulk velocities at these scales.

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