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          Institute: MPI für Gravitationsphysik     Collection: Observational Relativity and Cosmology     Display Documents



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ID: 403800.0, MPI für Gravitationsphysik / Observational Relativity and Cosmology
Cosmic Microwave Background Anisotropy Induced by Cosmic Strings on Angular Scales ≳15′
Authors:Allen, Bruce; Caldwell, R. R.; Dodelson, S.; Knox, L.; Shellard, E. P. S.; Stebbins, A.
Date of Publication (YYYY-MM-DD):1997-10-06
Title of Journal:Physical Review Letters
Volume:79
Issue / Number:14
Start Page:2624
End Page:2627
Review Status:not specified
Audience:Not Specified
Abstract / Description:We have computed an estimate of the angular power spectrum of the cosmic microwave background induced by cosmic strings on angular scales ≳15′, using a numerical simulation of a cosmic string network and have decomposed this pattern into scalar, vector, and tensor parts. The anisotropies from vector modes dominate except on very small angular scales, and we find no evidence for strong acoustic oscillations in the scalar anisotropy. The anisotropies generated after recombination are even more important than in adiabatic models. The total anisotropy on small scales is inconsistent with current measurements. The calculation has a number of uncertainties, the largest of which is due to finite temporal range.
External Publication Status:published
Document Type:Article
Communicated by:Bruce Allen
Affiliations:MPI für Gravitationsphysik/Teilinstitut Hannover
MPI für Gravitationsphysik/Observational Relativity and Cosmology
External Affiliations:Department of Physics, University of Wisconsin–Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201, USA
Identifiers:ISSN:1079-7114
DOI:10.1103/PhysRevLett.79.2624
URL:http://link.aps.org/doi/10.1103/PhysRevLett.79.262...
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