Hyperbolic Universes with a Horned Topology and the CMB Anisotropy
Astrophysics
2009-11-10 v2
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
Cite
@article{arxiv.astro-ph/0403597,
title = {Hyperbolic Universes with a Horned Topology and the CMB Anisotropy},
author = {Ralf Aurich and Sven Lustig and Frank Steiner and Holger Then},
journal= {arXiv preprint arXiv:astro-ph/0403597},
year = {2009}
}