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Microwave anisotropies from cosmic strings

Journal Article · · Phys. Rev. D; (United States)
The anisotropies in the microwave background radiation in the cosmic-string theory of galaxy formation are calculated using a general-relativistic analysis. On small scales (t-italich-italice-italict-italica-italicapprox. =0.5/sup 0/) we predict <(T-italic/sub 1/-T/sub 2/)/sup 2/>/sup 1/2//Tapprox. =4 x 10/sup -6/, on large scales (t-italich-italice-italict-italica-italicapprox. =6/sup 0/) <(T-italic/sub 1/-T/sub 2/)/sup 2/>/sup 1/2//Tapprox. =10 /sup -5/. The dominant effect is the Sachs-Wolfe effect from string loops. The above amplitudes are significantly smaller than the best current observational upper bounds.
Research Organization:
Institute for Theoretical Physics, University of California, Santa Barbara, California 93106
OSTI ID:
5418879
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 34:4; ISSN PRVDA
Country of Publication:
United States
Language:
English