The cosmic microwave background in a globally inhomogeneous universe
Open Access
- 1 March 1991
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 249 (1) , 126-130
- https://doi.org/10.1093/mnras/249.1.126
Abstract
A globally inhomogeneous universe is considered in the framework of an approximation scheme for constructing inhomogeneous universes in general relativity. The back-reaction of Newtonian inhomogeneities gives inhomogeneous and anisotropic correction terms to the averaged expansion factor. Dipole and quadrupole moment of the cosmic background radiation in a one-dimensional example are calculated, and a cosmological interpretation of the dipole component is shown to be consistent with the observational upper limits.Keywords
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