Hyperbolic Universes with a Horned Topology and the CMB Anisotropy

Preprint

19 October 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0403597

Abstract

We analyse the anisotropy of the cosmic microwave background (CMB) in hyperbolic universes possessing a non-trivial topology with a fundamental cell having an infinitely long horn. The aim of this paper is twofold. On the one hand, we show that the horned topology does not lead to a flat spot in the CMB sky maps in the direction of the horn as stated in the literature. On the other hand, we demonstrate that a horned topology having a finite volume could explain the suppression of the lower multipoles in the CMB anisotropy as observed by COBE and WMAP.

Keywords

ANALYSE THE ANISOTROPY
HYPERBOLIC UNIVERSES
HORNED TOPOLOGY
CMB ANISOTROPY
TOPOLOGY
HAND

All Related Versions

Version 1, 2004-03-25, ArXiv
Version 2, 2004-10-19, ArXiv
Published version: Classical and Quantum Gravity, 21 (21), 4901.

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