Phys. Rev. Lett. 79, 5198 - 5201 (1997)Cosmic Microwave Background Anisotropies from Scaling Seeds: Fit to Observational Data |
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R. Durrer1, M. Kunz1, C. Lineweaver2, and M. Sakellariadou1
1Département de Physique Théorique, Université de Genève, 24 quai Ernest Ansermet, CH-1211 Genève 4, Switzerland
2Observatoire de Strasbourg, 11 rue de l'Université, 67000 Strasbourg, France
Received 19 June 1997; revised 11 November 1997
We compute cosmic microwave background angular power spectra for scaling seed models of structure formation. A generic parametrization 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 χ2 fitting to compare these models to recent flat-band power measurements of the cosmic microwave background. Only scalar perturbations are considered.
©1997 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v79/p5198
DOI: 10.1103/PhysRevLett.79.5198
PACS: 98.70.Vc, 98.80.Cq
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