Cosmological searches for a noncold dark matter component

We explore an extended cosmological scenario where the dark matter is an admixture of cold and additional noncold species. The mass and temperature of the noncold dark matter particles are extracted from a number of cosmological measurements. Among others, we consider tomographic weak lensing data a...

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Detalles Bibliográficos
Autores: Gariazzo, Stefano, Escudero, Miguel, Diamanti, Roberta, Mena, Olga
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad Católica de Valencia San Vicente Mártir
Repositorio:RIUCV. Repositorio de la Universidad Católica de Valencia San Vicente Mártir
Idioma:inglés
OAI Identifier:oai:riucv.ucv.es:20.500.12466/5099
Acceso en línea:http://hdl.handle.net/20.500.12466/5099
Access Level:acceso abierto
Palabra clave:Cosmology
Dark matter
Mass
Temperature
21 Astronomía y Astrofísica
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spelling Cosmological searches for a noncold dark matter componentGariazzo, StefanoEscudero, MiguelDiamanti, RobertaMena, OlgaCosmologyDark matterMassTemperature21 Astronomía y AstrofísicaWe explore an extended cosmological scenario where the dark matter is an admixture of cold and additional noncold species. The mass and temperature of the noncold dark matter particles are extracted from a number of cosmological measurements. Among others, we consider tomographic weak lensing data and Milky Way dwarf satellite galaxy counts. We also study the potential of these scenarios in alleviating the existing tensions between local measurements and cosmic microwave background (CMB) estimates of the S8 parameter, with S8 ¼ σ8 ffiffiffiffiffiffiffi Ωm p , and of the Hubble constant H0. In principle, a subdominant, noncold dark matter particle with a mass mX ∼ keV, could achieve the goals above. However, the preferred ranges for its temperature and its mass are different when extracted from weak lensing observations and from Milky Way dwarf satellite galaxy counts, since these two measurements require suppressions of the matter power spectrum at different scales. Therefore, solving simultaneously the CMB-weak lensing tensions and the small scale crisis in the standard cold dark matter picture via only one noncold dark matter component seems to be challenging.20252025-01-1320172017-08-0120172017-08-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/20.500.12466/5099reponame:RIUCV. Repositorio de la Universidad Católica de Valencia San Vicente Mártirinstname:Universidad Católica de Valencia San Vicente MártirInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:riucv.ucv.es:20.500.12466/50992026-06-19T08:32:07Z
dc.title.none.fl_str_mv Cosmological searches for a noncold dark matter component
title Cosmological searches for a noncold dark matter component
spellingShingle Cosmological searches for a noncold dark matter component
Gariazzo, Stefano
Cosmology
Dark matter
Mass
Temperature
21 Astronomía y Astrofísica
title_short Cosmological searches for a noncold dark matter component
title_full Cosmological searches for a noncold dark matter component
title_fullStr Cosmological searches for a noncold dark matter component
title_full_unstemmed Cosmological searches for a noncold dark matter component
title_sort Cosmological searches for a noncold dark matter component
dc.creator.none.fl_str_mv Gariazzo, Stefano
Escudero, Miguel
Diamanti, Roberta
Mena, Olga
author Gariazzo, Stefano
author_facet Gariazzo, Stefano
Escudero, Miguel
Diamanti, Roberta
Mena, Olga
author_role author
author2 Escudero, Miguel
Diamanti, Roberta
Mena, Olga
author2_role author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Cosmology
Dark matter
Mass
Temperature
21 Astronomía y Astrofísica
topic Cosmology
Dark matter
Mass
Temperature
21 Astronomía y Astrofísica
description We explore an extended cosmological scenario where the dark matter is an admixture of cold and additional noncold species. The mass and temperature of the noncold dark matter particles are extracted from a number of cosmological measurements. Among others, we consider tomographic weak lensing data and Milky Way dwarf satellite galaxy counts. We also study the potential of these scenarios in alleviating the existing tensions between local measurements and cosmic microwave background (CMB) estimates of the S8 parameter, with S8 ¼ σ8 ffiffiffiffiffiffiffi Ωm p , and of the Hubble constant H0. In principle, a subdominant, noncold dark matter particle with a mass mX ∼ keV, could achieve the goals above. However, the preferred ranges for its temperature and its mass are different when extracted from weak lensing observations and from Milky Way dwarf satellite galaxy counts, since these two measurements require suppressions of the matter power spectrum at different scales. Therefore, solving simultaneously the CMB-weak lensing tensions and the small scale crisis in the standard cold dark matter picture via only one noncold dark matter component seems to be challenging.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-08-01
2017
2017-08-01
2025
2025-01-13
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12466/5099
url http://hdl.handle.net/20.500.12466/5099
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 4.0 Internacional
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 4.0 Internacional
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:RIUCV. Repositorio de la Universidad Católica de Valencia San Vicente Mártir
instname:Universidad Católica de Valencia San Vicente Mártir
instname_str Universidad Católica de Valencia San Vicente Mártir
reponame_str RIUCV. Repositorio de la Universidad Católica de Valencia San Vicente Mártir
collection RIUCV. Repositorio de la Universidad Católica de Valencia San Vicente Mártir
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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