Large-scale structure in isocurvature baryon models

Details Large-scale structure in isocurvature baryon models Large-scale structure in isocurvature baryon models

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387..431s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 387, March 10, 1992, p. 431-438.

Statistics

Computation

21

Baryons, Cosmology, Galactic Clusters, Many Body Problem, Computational Astrophysics, Correlation, Curvature, Power Spectra, Universe

Scientific paper

Cosmological N-body simulations are used to investigate the formation and evolution of large-scale structure in isocurvature baryon models. The results of the simulations mainly provide constraints on the spectral index n of the primordial density fluctuations. Both the spatial and the angular two-point correlation functions of galaxies are in good agreement with the observations for n = -1 models. Models with n = 0 lead to steeper correlation functions than the observations. In fact, n = -1 models produce reasonably well the large-scale coherence in the peculiar velocity field as indicated by several observations. Together with the complementary constraints from the microwave background anisotropies, the acceptable parameter range of the isocurvature baryon models is severely restricted.

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