Cosmic Microwave Background Anisotropies from Scaling Seeds: Fit to Observational Data

Abstract

We compute cosmic microwave background angular power spectra for scaling seed models of structure formation. A generic parameterization of the energy momentum tensor of the seeds is employed. We concentrate on two regions of parameter space inspired by global topological defects: O(4) texture models and the large-N limit of O(N) models. We use ${\chi }^2$ fitting to compare these models to recent flat-band power measurements of the cosmic microwave background. Only scalar perturbations are considered.

LaTeX file 4 pages, 4 postscript figs. revised version, to appear in PRL

References in corpus (3)

• Power Spectra in Global Defect Theories of Cosmic Structure Formation
• Microwave Background Anisotropies from Scaling Seed Perturbations
• Microwave Background Anisotropies Induced by Global Scalar Fields: The Large N Limit

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