Open AccessThe growth of linear perturbations in generic defect models for structure formation
Author(s) -
Avelino P. P.,
De Carvalho J. P. M.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.03100.x
Subject(s) - physics , scaling , wavenumber , spectral density , perturbation (astronomy) , statistical physics , linear growth , astrophysics , spectrum (functional analysis) , scale (ratio) , function (biology) , classical mechanics , mathematical analysis , quantum mechanics , statistics , geometry , mathematics , evolutionary biology , biology
We study the growth of linear perturbations induced by a generic causal scaling source as a function of the cosmological parameters h , and . We show that for wavenumbers k ≳0.01 h Mpc −1 the spectrum of density and velocity perturbations scales 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 that naturally occur at late times if .