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dc.contributor.authorMelia, Fulvio
dc.date.accessioned2018-12-12T00:49:06Z
dc.date.available2018-12-12T00:49:06Z
dc.date.issued2018-09-21
dc.identifier.citationFulvio Melia; A comparison of the Rh = ct and ΛCDM cosmologies using the cosmic distance duality relation, Monthly Notices of the Royal Astronomical Society, Volume 481, Issue 4, 21 December 2018, Pages 4855–4862, https://doi.org/10.1093/mnras/sty2596en_US
dc.identifier.issn0035-8711
dc.identifier.doi10.1093/mnras/sty2596
dc.identifier.urihttp://hdl.handle.net/10150/631134
dc.description.abstractThe cosmic distance duality (CDD) relation (based on the Etherington reciprocity theorem) plays a crucial role in a wide assortment of cosmological measurements. Attempts at confirming it observationally have met with mixed results, though the general consensus appears to be that the data do support its existence in nature. A common limitation with past approaches has been their reliance on a specific cosmological model, or on measurements of the luminosity distance to Type Ia SNe, which introduces a dependence on the presumed cosmology in spite of beliefs to the contrary. Confirming that the CDD is actually realized in nature is crucial because its violation would require exotic new physics. In this paper, we study the CDD using the observed angular size of compact quasar cores and a Gaussian Process reconstruction of the H II galaxy Hubble diagram – without pre-assuming any particular background cosmology. In so doing, we confirm at a very high level of confidence that the angular-diameter and luminosity distances do indeed satisfy the CDD. We then demonstrate the potential power of this result by utilizing it in a comparative test of two competing cosmological models – the Rh = ct universe and ΛCDM – and show that Rh = ct is favoured by the CDD data with a likelihood ∼82.3 per cent compared with ∼17.7 per cent for the standard model.en_US
dc.language.isoenen_US
dc.publisherOXFORD UNIV PRESSen_US
dc.relation.urlhttps://academic.oup.com/mnras/article/481/4/4855/5105758en_US
dc.rights© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Societyen_US
dc.subjectgalaxies: activeen_US
dc.subjectcosmological parametersen_US
dc.subjectdistance scaleen_US
dc.subjectcosmology: observationsen_US
dc.subjectcosmology: theoryen_US
dc.titleA comparison of the R_h=ct and LCDM cosmologies using the Cosmic Distance Duality Relationen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Phys, Program Appl Mathen_US
dc.contributor.departmentUniv Arizona, Dept Astronen_US
dc.identifier.journalMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYen_US
dc.description.noteno embargoen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
refterms.dateFOA2018-12-12T00:49:07Z


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