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dc.contributor.authorMelia, Fulvio
dc.contributor.authorYennapureddy, Manoj K.
dc.date.accessioned2018-12-14T20:22:55Z
dc.date.available2018-12-14T20:22:55Z
dc.date.issued2018-02-19
dc.identifier.issn1475-7516
dc.identifier.doi10.1088/1475-7516/2018/02/034
dc.identifier.urihttp://hdl.handle.net/10150/631185
dc.description.abstractThe use of Gaussian Processes with a measurement of the cosmic expansion rate based solely on the observation of cosmic chronometers provides a completely cosmology-independent reconstruction of the Hubble constant H(z) suitable for testing different models. The corresponding dispersion σH is smaller than ~ 9% over the entire redshift range (lesssim zlesssim 20) of the observations, rivaling many kinds of cosmological measurements available today. We use the reconstructed H(z) function to test six different cosmologies, and show that it favours the Rh=ct universe, which has only one free parameter (i.e., H0) over other models, including Planck ΛCDM . The parameters of the standard model may be re-optimized to improve the fits to the reconstructed H(z) function, but the results have smaller p-values than one finds with Rh=ct.en_US
dc.language.isoenen_US
dc.relation.urlhttp://stacks.iop.org/1475-7516/2018/i=02/a=034?key=crossref.6218c22b81727030051600e72e64ef11en_US
dc.relation.urlhttps://arxiv.org/abs/1802.02255en_US
dc.rights© 2018 IOP Publishing Ltd and Sissa Medialab.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectcosmology of theories beyond the SMen_US
dc.subjectgalaxy evolutionen_US
dc.subjectcosmic flowsen_US
dc.subjectstar formationen_US
dc.titleModel selection using cosmic chronometers with Gaussian Processesen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Phys, Appl Math Programen_US
dc.contributor.departmentUniv Arizona, Steward Observatoryen_US
dc.contributor.departmentUniv Arizona, Dept Physen_US
dc.identifier.journalJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICSen_US
dc.description.note12 month embargo; published 19 February 2018en_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
dc.source.journaltitleJournal of Cosmology and Astroparticle Physics
dc.source.volume2018
dc.source.issue02
dc.source.beginpage034
dc.source.endpage034


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