Cosmic microwave anisotropies in an inhomogeneous compact flat universe

Details Cosmic microwave anisotropies in an inhomogeneous compact flat universe Cosmic microwave anisotropies in an inhomogeneous compact flat universe

2010-09-29

arxiv.org/abs/1009.5880v2

Class. Quantum Grav. 28 (2011) 085017

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Scientific paper

The anisotropies of the cosmic microwave background (CMB) are computed for the half-turn space E_2 which represents a compact flat model of the Universe, i.e. one with finite volume. This model is inhomogeneous in the sense that the statistical properties of the CMB depend on the position of the observer within the fundamental cell. It is shown that the half-turn space describes the observed CMB anisotropies on large scales better than the concordance model with infinite volume. For most observer positions it matches the temperature correlation function even slightly better than the well studied 3-torus topology.

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