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arXiv · astro-ph/9309023

The Fourier Space Statistics of Seedlike Cosmological Perturbations

Abstract

We propose a new test for distinguishing observationally cosmological models based on seed-like primordial perturbations (like cosmic strings or textures), from models based on Gaussian fluctuations. We investigate analytically the {\it Fourier space} statistical properties of temperature or density fluctuation patterns generated by seed-like objects and compare these properties with those of Gaussian fluctuations generated during inflation. We show that the proposed statistical test can easily identify temperature fluctuations produced by a superposition of a small number of seeds per horizon scale for {\it any} observational angular resolution and {\it any} seed geometry. However, due to the Central Limit Theorem, the distinction becomes more difficult as the number of seeds in the fluctuation pattern increases.

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BibTeXRIS

Leandros Perivolaropoulos. 1993-09-16. The Fourier Space Statistics of Seedlike Cosmological Perturbations. https://doi.org/10.1093/mnras%2F267.3.529

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