Large-scale structure from cosmic-string loops in a baryon-dominated universe

Details Large-scale structure from cosmic-string loops in a baryon-dominated universe Large-scale structure from cosmic-string loops in a baryon-dominated universe

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...331...38m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 331, Aug. 1, 1988, p. 38-44. Research supported by the University of Kansas

Astronomy and Astrophysics

Astrophysics

8

Cosmology, Dark Matter, Elementary Particles, String Theory, Baryons, Galactic Clusters, Universe

Scientific paper

The results are presented of a numerical simulation of the formation of large-scale structure in a universe with Omega(0) = 0.2 and h = 0.5 dominated by baryons in which cosmic strings provide the initial density perturbations. The numerical model yields a power spectrum. Nonlinear evolution confirms that the model can account for 700 km/s bulk flows and a strong cluster-cluster correlation, but does rather poorly on smaller scales. There is no visual 'filamentary' structure, and the two-point correlation has too steep a logarithmic slope. The value of G mu = 4 x 10 to the -6th is significantly lower than previous estimates for the value of G mu in baryon-dominated cosmic string models.

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