The Fluctuations of the Cosmic Microwave Background for a Compact Hyperbolic Universe | Zendy

R. Aurich | Zendy

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The Fluctuations of the Cosmic Microwave Background for a Compact Hyperbolic Universe

Author(s) -

R. Aurich

Publication year - 1999

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/307848

Subject(s) - cosmic microwave background , physics , cosmic background radiation , spectral density , perturbation (astronomy) , universe , astrophysics , cosmic cancer database , cosmological perturbation theory , perturbation theory (quantum mechanics) , microwave , big bang (financial markets) , age of the universe , cosmology , astronomy , de sitter universe , optics , quantum mechanics , statistics , mathematics , anisotropy , finance , economics

The fluctuations of the cosmic microwave background (CMB) are investigatedfor a small open universe, i.e., one which is periodically composed of a smallfundamental cell. The evolution of initial metric perturbations is computedusing the first 749 eigenmodes of the fundamental cell in the framework oflinear perturbation theory using a mixture of radiation and matter. Thefluctuations of the CMB are investigated for various density parameters Omega_0taking into account the full Sachs-Wolfe effect. The corresponding angularpower spectrum C_l is compared with recent experiments.

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