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dc.contributor.authorClifton, Ten_US
dc.contributor.authorFerreira, PGen_US
dc.contributor.authorZuntz, Jen_US
dc.date.accessioned2016-11-23T11:54:43Z
dc.date.submitted2016-11-07T16:42:12.682Z
dc.identifier.urihttp://qmro.qmul.ac.uk/xmlui/handle/123456789/17844
dc.description5 pages, 3 figures. Corrections made to published version
dc.description5 pages, 3 figures. Corrections made to published versionen_US
dc.description.abstractIt is well known that observations of the cosmic microwave background (CMB) are highly sensitive to the spatial curvature of the Universe, k. Here we find that what is in fact being tightly constrained by small angle fluctuations is spatial curvature near the surface of last scattering, and that if we allow k to be a function of position, rather than taking a constant value everywhere, then considerable spatial curvature is permissible within our own locale. This result is of interest for the giant void models that attempt to explain the supernovae observations without Dark Energy. We find voids models with a homogeneous big bang can be compatible with the observed small angle CMB, but only if they exist in a positively curved universe. To be compatible with local measurements of H_0, however, we find that a radially varying bang time is required.en_US
dc.format.extent029 - ?en_US
dc.relation.ispartofJCAPen_US
dc.rightsThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Journal of Cosmology and Astroparticle Physics following peer review. The version of record is available http://iopscience.iop.org/article/10.1088/1475-7516/2009/07/029/meta
dc.subjectastro-ph.COen_US
dc.subjectastro-ph.COen_US
dc.subjectgr-qcen_US
dc.titleWhat the small angle CMB really tells us about the curvature of the Universeen_US
dc.typeArticle
dc.rights.holder© 2009 IOP Publishing Ltd and SISSA
dc.identifier.doi10.1088/1475-7516/2009/07/029en_US
pubs.author-urlhttp://arxiv.org/abs/0902.1313v3en_US
pubs.notesNo embargoen_US
pubs.organisational-group/Queen Mary University of London
pubs.organisational-group/Queen Mary University of London/Faculty of Science & Engineering
pubs.organisational-group/Queen Mary University of London/Faculty of Science & Engineering/Physics and Astronomy
pubs.publisher-urlhttp://dx.doi.org/10.1088/1475-7516/2009/07/029en_US
pubs.volume0907en_US


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