(Lack of) Cosmological evidence for dark radiation after Planck

We use Bayesian model comparison to determine whether extensions to Standard-Model neutrino physics primarily additional effective numbers of neutrinos and/or massive neutrinos are merited by the latest cosmological data. Given the significant advances in cosmic microwave background (CMB) observatio...

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Detalles Bibliográficos
Autores: Verde, Licia, Feeney, Stephen M., Mortlock, D. J., Peiris, Hiranya V.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2013
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/110169
Acceso en línea:https://hdl.handle.net/2445/110169
Access Level:acceso abierto
Palabra clave:Neutrins
Estadística bayesiana
Matèria fosca (Astronomia)
Cosmologia
Neutrinos
Bayesian statistical decision
Dark matter (Astronomy)
Cosmology
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spelling (Lack of) Cosmological evidence for dark radiation after PlanckVerde, LiciaFeeney, Stephen M.Mortlock, D. J.Peiris, Hiranya V.NeutrinsEstadística bayesianaMatèria fosca (Astronomia)CosmologiaNeutrinosBayesian statistical decisionDark matter (Astronomy)CosmologyWe use Bayesian model comparison to determine whether extensions to Standard-Model neutrino physics primarily additional effective numbers of neutrinos and/or massive neutrinos are merited by the latest cosmological data. Given the significant advances in cosmic microwave background (CMB) observations represented by the Planck data, we examine whether Planck temperature and CMB lensing data, in combination with lower redshift data, have strengthened (or weakened) the previous findings. We conclude that the state-of-the-art cosmological data do not show evidence for deviations from the standard (ΛCDM) cosmological model (which has three massless neutrino families). This does not mean that the model is necessarily correct in fact we know it is incomplete as neutrinos are not massless but it does imply that deviations from the standard model (e.g., non-zero neutrino mass) are too small compared to the current experimental uncertainties to be inferred from cosmological data alone.Institute of Physics (IOP)2017201720132017info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion17 p.application/pdfhttps://hdl.handle.net/2445/110169Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2013/09/013Versió postprint del document publicat a: https://doi.org/10.1088/1475-7516/2013/09/013Journal of Cosmology and Astroparticle Physics, 2013, vol. 2013, num. 037https://doi.org/10.1088/1475-7516/2013/09/013info:eu-repo/grantAgreement/EC/FP7/240117(c) IOP Publishing Ltd and Sissa Medialab srl, 2013info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1101692026-05-29T05:05:01Z
dc.title.none.fl_str_mv (Lack of) Cosmological evidence for dark radiation after Planck
title (Lack of) Cosmological evidence for dark radiation after Planck
spellingShingle (Lack of) Cosmological evidence for dark radiation after Planck
Verde, Licia
Neutrins
Estadística bayesiana
Matèria fosca (Astronomia)
Cosmologia
Neutrinos
Bayesian statistical decision
Dark matter (Astronomy)
Cosmology
title_short (Lack of) Cosmological evidence for dark radiation after Planck
title_full (Lack of) Cosmological evidence for dark radiation after Planck
title_fullStr (Lack of) Cosmological evidence for dark radiation after Planck
title_full_unstemmed (Lack of) Cosmological evidence for dark radiation after Planck
title_sort (Lack of) Cosmological evidence for dark radiation after Planck
dc.creator.none.fl_str_mv Verde, Licia
Feeney, Stephen M.
Mortlock, D. J.
Peiris, Hiranya V.
author Verde, Licia
author_facet Verde, Licia
Feeney, Stephen M.
Mortlock, D. J.
Peiris, Hiranya V.
author_role author
author2 Feeney, Stephen M.
Mortlock, D. J.
Peiris, Hiranya V.
author2_role author
author
author
dc.subject.none.fl_str_mv Neutrins
Estadística bayesiana
Matèria fosca (Astronomia)
Cosmologia
Neutrinos
Bayesian statistical decision
Dark matter (Astronomy)
Cosmology
topic Neutrins
Estadística bayesiana
Matèria fosca (Astronomia)
Cosmologia
Neutrinos
Bayesian statistical decision
Dark matter (Astronomy)
Cosmology
description We use Bayesian model comparison to determine whether extensions to Standard-Model neutrino physics primarily additional effective numbers of neutrinos and/or massive neutrinos are merited by the latest cosmological data. Given the significant advances in cosmic microwave background (CMB) observations represented by the Planck data, we examine whether Planck temperature and CMB lensing data, in combination with lower redshift data, have strengthened (or weakened) the previous findings. We conclude that the state-of-the-art cosmological data do not show evidence for deviations from the standard (ΛCDM) cosmological model (which has three massless neutrino families). This does not mean that the model is necessarily correct in fact we know it is incomplete as neutrinos are not massless but it does imply that deviations from the standard model (e.g., non-zero neutrino mass) are too small compared to the current experimental uncertainties to be inferred from cosmological data alone.
publishDate 2013
dc.date.none.fl_str_mv 2013
2017
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/110169
url https://hdl.handle.net/2445/110169
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2013/09/013
Versió postprint del document publicat a: https://doi.org/10.1088/1475-7516/2013/09/013
Journal of Cosmology and Astroparticle Physics, 2013, vol. 2013, num. 037
https://doi.org/10.1088/1475-7516/2013/09/013
info:eu-repo/grantAgreement/EC/FP7/240117
dc.rights.none.fl_str_mv (c) IOP Publishing Ltd and Sissa Medialab srl, 2013
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) IOP Publishing Ltd and Sissa Medialab srl, 2013
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 17 p.
application/pdf
dc.publisher.none.fl_str_mv Institute of Physics (IOP)
publisher.none.fl_str_mv Institute of Physics (IOP)
dc.source.none.fl_str_mv Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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