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

Ruth Durrer | Zendy; M. Kunz | Zendy; Charles H. Lineweaver | Zendy; Mairi Sakellariadou | Zendy

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

Author(s) -

Ruth Durrer,

M. Kunz,

Charles H. Lineweaver,

Mairi Sakellariadou

Publication year - 1997

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.79.5198

Subject(s) - cosmic microwave background , physics , isotropy , parametrization (atmospheric modeling) , scaling , anisotropy , cosmic background radiation , cosmic cancer database , scalar (mathematics) , spectral density , parameter space , astrophysics , particle physics , computational physics , statistics , quantum mechanics , geometry , mathematics , radiative transfer

We compute cosmic microwave background angular power spectra for scaling seedmodels of structure formation. A generic parameterization of the energymomentum tensor of the seeds is employed. We concentrate on two regions ofparameter space inspired by global topological defects: O(4) texture models andthe large-N limit of O(N) models. We use $\chi^{2}$ fitting to compare thesemodels to recent flat-band power measurements of the cosmic microwavebackground. Only scalar perturbations are considered.Comment: LaTeX file 4 pages, 4 postscript figs. revised version, to appear in PR

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