The growth of linear perturbations in generic defect models for structure formation

Details The growth of linear perturbations in generic defect models for structure formation The growth of linear perturbations in generic defect models for structure formation

1998-10-22

arxiv.org/abs/astro-ph/9810364v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures

Scientific paper

10.1046/j.1365-8711.1999.03100.x

We study the growth of linear perturbations induced by a generic causal scaling source as a function of the cosmological parameters $h$, $\Omega^m_0$ and $\Omega^\Lambda_0$. We show that for wavenumbers $k \gsim 0.01 h/Mpc$ the spectrum of density and velocity perturbations scale in a similar way to that found in inflationary models with primordial perturbations. We show that this result is independent of the more or less incoherent nature of the source, the small scale power spectrum of the source and of deviations from scaling which naturally occur at late times if $\Omega^m_0 \neq 1$.

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