Constraining Cosmic Topology with CMB Polarization

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dc.creatorRiazuelo, Alain
dc.creatorCaillerie, Samuel
dc.creatorLachièze-Rey, Marc
dc.creatorLehoucq, Roland
dc.creatorLuminet, Jean-Pierre
dc.date2006-01-19
dc.date.accessioned2026-07-07T06:57:01Z
dc.date.available2026-07-07T06:57:01Z
dc.descriptionMultiply connected space sections of the universe on a scale smaller than the horizon size can leave an imprint on cosmic microwave background polarization maps, in such a way that the so-called ``circles-in-the-sky'' method can be used to detect or constrain the topology. We investigate some specific cases, namely toroidal and sixth-turn spaces, in order to show the influence of topology on CMB polarization. The correlation between matched points happens to be always positive and higher than 75% regardless of the angular scale and of the cosmological parameters, except for reionization. This figure is better than what occurs in temperature maps, but is achieved only in the absence of noise. It is only slightly reduced by the filtering scheme.
dc.description10 pages, submitted to PRD
dc.identifierhttps://arxiv.org/abs/astro-ph/0601433
dc.identifierhttp://arxiv.org/abs/astro-ph/0601433
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/106820
dc.subjectAstrophysics
dc.titleConstraining Cosmic Topology with CMB Polarization
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