Evolution of Power Spectrum in Non-Gaussian Models

Details Evolution of Power Spectrum in Non-Gaussian Models Evolution of Power Spectrum in Non-Gaussian Models

2001-02-12

arxiv.org/abs/astro-ph/0102195v1

Astronomy and Astrophysics

Astrophysics

25 pages, 7 figures, to appear in ApJ (553, Jun 1)

Scientific paper

10.1086/320953

Evolution of power spectrum is studied for non-Gaussian models of structure formation. We generalize the dark-matter-approach to these models and find that the evolved spectrum at weakly nonlinear regime is mainly determined by a simple integral of the dark-matter-halo mass function in this approach. We also study the change of the nonlinear spectrum within the current observational constraint of the primordial non-Gaussianity.

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