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dc.contributor.authorClifton, Ten_US
dc.contributor.authorFerreira, PGen_US
dc.contributor.authorLand, Ken_US
dc.date.accessioned2016-11-24T10:51:57Z
dc.date.issued2008-07-09en_US
dc.date.submitted2016-11-07T16:45:22.095Z
dc.identifier.issn1079-7114en_US
dc.identifier.other131302
dc.identifier.other131302
dc.identifier.other131302
dc.identifier.other131302
dc.identifier.other131302en_US
dc.identifier.other131302en_US
dc.identifier.urihttp://qmro.qmul.ac.uk/xmlui/handle/123456789/17866
dc.description4 pages, 3 figures. Published version
dc.description4 pages, 3 figures. Published versionen_US
dc.description4 pages, 3 figures. Published versionen_US
dc.description.abstractA fundamental presupposition of modern cosmology is the Copernican Principle; that we are not in a central, or otherwise special region of the Universe. Studies of Type Ia supernovae, together with the Copernican Principle, have led to the inference that the Universe is accelerating in its expansion. The usual explanation for this is that there must exist a `Dark Energy', to drive the acceleration. Alternatively, it could be the case that the Copernican Principle is invalid, and that the data has been interpreted within an inappropriate theoretical frame-work. If we were to live in a special place in the Universe, near the centre of a void where the local matter density is low, then the supernovae observations could be accounted for without the addition of dark energy. We show that the local redshift dependence of the luminosity distance can be used as a clear discriminant between these two paradigms. Future surveys of Type Ia supernovae that focus on a redshift range of ~0.1-0.4 will be ideally suited to test this hypothesis, and hence to observationally determine the validity of the Copernican Principle on new scales, as well as probing the degree to which dark energy must be considered a necessary ingredient in the Universe.en_US
dc.relation.ispartofPhys. Rev. Lett. 101 (2008) 131302en_US
dc.rightsThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Physics Review Letters following peer review. The version of record is available http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.101.131302
dc.titleLiving in a Void: Testing the Copernican Principle with Distant Supernovaeen_US
dc.typeArticle
dc.rights.holder© 2008 American Physical Society
dc.identifier.doi10.1103/PhysRevLett.101.131302en_US
pubs.author-urlhttp://arxiv.org/abs/0807.1443v2en_US
pubs.issue13en_US
pubs.notesNo embargoen_US
pubs.publisher-urlhttp://dx.doi.org/10.1103/PhysRevLett.101.131302en_US
pubs.volume101en_US


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