DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest

DESI Collaboration: et al. -- Dark Energy Spectroscopic Instrument (DESI) survey Year 1 results. -- ArXiv ePrint: 2404.03001

Detalles Bibliográficos
Autores: DESI Collaboration, Adame, Adrian G., Gonzalez-Perez, Violeta, Ereza, J., Prada, Francisco, Gaztañaga, Enrique, Gil-Marín, Héctor
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/389864
Acceso en línea:http://hdl.handle.net/10261/389864
Access Level:acceso abierto
Palabra clave:Baryon acoustic oscillations
Cosmological parameters from LSS
Lyman alpha forest
Redshift surveys
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spelling DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forestDESI CollaborationAdame, Adrian G.Gonzalez-Perez, VioletaEreza, J.Prada, FranciscoGaztañaga, EnriqueGil-Marín, HéctorBaryon acoustic oscillationsCosmological parameters from LSSLyman alpha forestRedshift surveysDESI Collaboration: et al. -- Dark Energy Spectroscopic Instrument (DESI) survey Year 1 results. -- ArXiv ePrint: 2404.03001We present the measurement of Baryon Acoustic Oscillations (BAO) from the Lyman-α(Lyα) forest of high-redshift quasars with the first-year dataset of the Dark Energy Spectroscopic Instrument (DESI). Our analysis uses over 420 000 Lyα forest spectra and their correlation with the spatial distribution of more than 700 000 quasars. An essential facet of this work is the development of a new analysis methodology on a blinded dataset. We conducted rigorous tests using synthetic data to ensure the reliability of our methodology and findings before unblinding. Additionally, we conducted multiple data splits to assess the consistency of the results and scrutinized various analysis approaches to confirm their robustness. For a given value of the sound horizon (rd), we measure the expansion at zeff = 2.33 with 2% precision, H(zeff) = ( 239.2 ± 4.8 ) (147.09 Mpc /rd ) km/s/Mpc. Similarly, we present a 2.4% measurement of the transverse comoving distance to the same redshift, DM(zeff) = ( 5.84 ± 0.14 ) (rd/147.09 Mpc) Gpc. Together with other DESI BAO measurements at lower redshifts, these results are used in a companion paper to constrain cosmological parameters.Peer reviewedIOP PublishingGaztañaga, Enrique [0000-0001-9632-0815]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/389864reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1088/1475-7516/2025/01/124Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3898642026-05-22T06:33:51Z
dc.title.none.fl_str_mv DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
title DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
spellingShingle DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
DESI Collaboration
Baryon acoustic oscillations
Cosmological parameters from LSS
Lyman alpha forest
Redshift surveys
title_short DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
title_full DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
title_fullStr DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
title_full_unstemmed DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
title_sort DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
dc.creator.none.fl_str_mv DESI Collaboration
Adame, Adrian G.
Gonzalez-Perez, Violeta
Ereza, J.
Prada, Francisco
Gaztañaga, Enrique
Gil-Marín, Héctor
author DESI Collaboration
author_facet DESI Collaboration
Adame, Adrian G.
Gonzalez-Perez, Violeta
Ereza, J.
Prada, Francisco
Gaztañaga, Enrique
Gil-Marín, Héctor
author_role author
author2 Adame, Adrian G.
Gonzalez-Perez, Violeta
Ereza, J.
Prada, Francisco
Gaztañaga, Enrique
Gil-Marín, Héctor
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Gaztañaga, Enrique [0000-0001-9632-0815]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Baryon acoustic oscillations
Cosmological parameters from LSS
Lyman alpha forest
Redshift surveys
topic Baryon acoustic oscillations
Cosmological parameters from LSS
Lyman alpha forest
Redshift surveys
description DESI Collaboration: et al. -- Dark Energy Spectroscopic Instrument (DESI) survey Year 1 results. -- ArXiv ePrint: 2404.03001
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/389864
url http://hdl.handle.net/10261/389864
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1088/1475-7516/2025/01/124
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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