Non-fiducial cosmological test from geometrical and dynamical distortions around voids

Autores
Correa, Carlos Mauricio; Paz, Dante Javier; Padilla, Nelson David; Ruiz, Andrés Nicolás; Angulo, Raúl E.; Sánchez, Ariel G.
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a new cosmological test using the distribution of galaxies around cosmic voids without assuming a fiducial cosmology. The test is based on a physical model for the void-galaxy cross-correlation function projected along and perpendicular to the line of sight. We treat correlations in terms of void-centric angular distances and redshift differences between void-galaxy pairs, hence it is not necessary to assume a fiducial cosmology. This model reproduces the coupled dynamical (Kaiser effect, RSD) and geometrical (Alcock-Paczynski effect, GD) distortions that affect the correlation measurements. It also takes into account the scale mixing due to the projection ranges in both directions. The model is general, so it can be applied to an arbitrary cylindrical binning scheme, not only in the case of the projected correlations. It primarily depends on two cosmological parameters: Ωm, the matter fraction of the Universe today (sensitive to GD), and β, the ratio between the growth rate factor of density perturbations and the tracer bias (sensitive to RSD). In the context of the new generation of galaxy spectroscopic surveys, we calibrated the test using the Millennium XXL simulation for different redshifts. The method successfully recovers the cosmological parameters. We studied the effect of measuring with different projection ranges, finding robust results up to wide ranges. The resulting data covariance matrices are relatively small, which reduces the noise in the Gaussian likelihood analysis and will allow the usage of a smaller number of mock catalogues. The performance evaluated in this work indicates that the developed method is a promising test to be applied on real data.
Fil: Correa, Carlos Mauricio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Paz, Dante Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Padilla, Nelson David. Departamento de Astronomia y Astrofisica; Chile
Fil: Ruiz, Andrés Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Angulo, Raúl E.. Donostia International Physics Centre; España
Fil: Sánchez, Ariel G.. Max Plank Institute For Extraterrestrial Physics; Alemania
Materia
COSMOLOGICAL PARAMETERS
GALAXIES: DISTANCES AND REDSHIFTS
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/120705
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/120705
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Non-fiducial cosmological test from geometrical and dynamical distortions around voidsCorrea, Carlos MauricioPaz, Dante JavierPadilla, Nelson DavidRuiz, Andrés NicolásAngulo, Raúl E.Sánchez, Ariel G.COSMOLOGICAL PARAMETERSGALAXIES: DISTANCES AND REDSHIFTSLARGE-SCALE STRUCTURE OF UNIVERSEMETHODS: DATA ANALYSISMETHODS: STATISTICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a new cosmological test using the distribution of galaxies around cosmic voids without assuming a fiducial cosmology. The test is based on a physical model for the void-galaxy cross-correlation function projected along and perpendicular to the line of sight. We treat correlations in terms of void-centric angular distances and redshift differences between void-galaxy pairs, hence it is not necessary to assume a fiducial cosmology. This model reproduces the coupled dynamical (Kaiser effect, RSD) and geometrical (Alcock-Paczynski effect, GD) distortions that affect the correlation measurements. It also takes into account the scale mixing due to the projection ranges in both directions. The model is general, so it can be applied to an arbitrary cylindrical binning scheme, not only in the case of the projected correlations. It primarily depends on two cosmological parameters: Ωm, the matter fraction of the Universe today (sensitive to GD), and β, the ratio between the growth rate factor of density perturbations and the tracer bias (sensitive to RSD). In the context of the new generation of galaxy spectroscopic surveys, we calibrated the test using the Millennium XXL simulation for different redshifts. The method successfully recovers the cosmological parameters. We studied the effect of measuring with different projection ranges, finding robust results up to wide ranges. The resulting data covariance matrices are relatively small, which reduces the noise in the Gaussian likelihood analysis and will allow the usage of a smaller number of mock catalogues. The performance evaluated in this work indicates that the developed method is a promising test to be applied on real data.Fil: Correa, Carlos Mauricio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Paz, Dante Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Padilla, Nelson David. Departamento de Astronomia y Astrofisica; ChileFil: Ruiz, Andrés Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Angulo, Raúl E.. Donostia International Physics Centre; EspañaFil: Sánchez, Ariel G.. Max Plank Institute For Extraterrestrial Physics; AlemaniaWiley Blackwell Publishing, Inc2019-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/120705Correa, Carlos Mauricio; Paz, Dante Javier; Padilla, Nelson David; Ruiz, Andrés Nicolás; Angulo, Raúl E.; et al.; Non-fiducial cosmological test from geometrical and dynamical distortions around voids; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 485; 4; 3-2019; 5761-57720035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/485/4/5761/5420432info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz821info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:01:36Zoai:ri.conicet.gov.ar:11336/120705instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:01:36.993CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Non-fiducial cosmological test from geometrical and dynamical distortions around voids
title Non-fiducial cosmological test from geometrical and dynamical distortions around voids
spellingShingle Non-fiducial cosmological test from geometrical and dynamical distortions around voids
Correa, Carlos Mauricio
COSMOLOGICAL PARAMETERS
GALAXIES: DISTANCES AND REDSHIFTS
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
title_short Non-fiducial cosmological test from geometrical and dynamical distortions around voids
title_full Non-fiducial cosmological test from geometrical and dynamical distortions around voids
title_fullStr Non-fiducial cosmological test from geometrical and dynamical distortions around voids
title_full_unstemmed Non-fiducial cosmological test from geometrical and dynamical distortions around voids
title_sort Non-fiducial cosmological test from geometrical and dynamical distortions around voids
dc.creator.none.fl_str_mv Correa, Carlos Mauricio
Paz, Dante Javier
Padilla, Nelson David
Ruiz, Andrés Nicolás
Angulo, Raúl E.
Sánchez, Ariel G.
author Correa, Carlos Mauricio
author_facet Correa, Carlos Mauricio
Paz, Dante Javier
Padilla, Nelson David
Ruiz, Andrés Nicolás
Angulo, Raúl E.
Sánchez, Ariel G.
author_role author
author2 Paz, Dante Javier
Padilla, Nelson David
Ruiz, Andrés Nicolás
Angulo, Raúl E.
Sánchez, Ariel G.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv COSMOLOGICAL PARAMETERS
GALAXIES: DISTANCES AND REDSHIFTS
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
topic COSMOLOGICAL PARAMETERS
GALAXIES: DISTANCES AND REDSHIFTS
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: DATA ANALYSIS
METHODS: STATISTICAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present a new cosmological test using the distribution of galaxies around cosmic voids without assuming a fiducial cosmology. The test is based on a physical model for the void-galaxy cross-correlation function projected along and perpendicular to the line of sight. We treat correlations in terms of void-centric angular distances and redshift differences between void-galaxy pairs, hence it is not necessary to assume a fiducial cosmology. This model reproduces the coupled dynamical (Kaiser effect, RSD) and geometrical (Alcock-Paczynski effect, GD) distortions that affect the correlation measurements. It also takes into account the scale mixing due to the projection ranges in both directions. The model is general, so it can be applied to an arbitrary cylindrical binning scheme, not only in the case of the projected correlations. It primarily depends on two cosmological parameters: Ωm, the matter fraction of the Universe today (sensitive to GD), and β, the ratio between the growth rate factor of density perturbations and the tracer bias (sensitive to RSD). In the context of the new generation of galaxy spectroscopic surveys, we calibrated the test using the Millennium XXL simulation for different redshifts. The method successfully recovers the cosmological parameters. We studied the effect of measuring with different projection ranges, finding robust results up to wide ranges. The resulting data covariance matrices are relatively small, which reduces the noise in the Gaussian likelihood analysis and will allow the usage of a smaller number of mock catalogues. The performance evaluated in this work indicates that the developed method is a promising test to be applied on real data.
Fil: Correa, Carlos Mauricio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Paz, Dante Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Padilla, Nelson David. Departamento de Astronomia y Astrofisica; Chile
Fil: Ruiz, Andrés Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Angulo, Raúl E.. Donostia International Physics Centre; España
Fil: Sánchez, Ariel G.. Max Plank Institute For Extraterrestrial Physics; Alemania
description We present a new cosmological test using the distribution of galaxies around cosmic voids without assuming a fiducial cosmology. The test is based on a physical model for the void-galaxy cross-correlation function projected along and perpendicular to the line of sight. We treat correlations in terms of void-centric angular distances and redshift differences between void-galaxy pairs, hence it is not necessary to assume a fiducial cosmology. This model reproduces the coupled dynamical (Kaiser effect, RSD) and geometrical (Alcock-Paczynski effect, GD) distortions that affect the correlation measurements. It also takes into account the scale mixing due to the projection ranges in both directions. The model is general, so it can be applied to an arbitrary cylindrical binning scheme, not only in the case of the projected correlations. It primarily depends on two cosmological parameters: Ωm, the matter fraction of the Universe today (sensitive to GD), and β, the ratio between the growth rate factor of density perturbations and the tracer bias (sensitive to RSD). In the context of the new generation of galaxy spectroscopic surveys, we calibrated the test using the Millennium XXL simulation for different redshifts. The method successfully recovers the cosmological parameters. We studied the effect of measuring with different projection ranges, finding robust results up to wide ranges. The resulting data covariance matrices are relatively small, which reduces the noise in the Gaussian likelihood analysis and will allow the usage of a smaller number of mock catalogues. The performance evaluated in this work indicates that the developed method is a promising test to be applied on real data.
publishDate 2019
dc.date.none.fl_str_mv 2019-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/120705
Correa, Carlos Mauricio; Paz, Dante Javier; Padilla, Nelson David; Ruiz, Andrés Nicolás; Angulo, Raúl E.; et al.; Non-fiducial cosmological test from geometrical and dynamical distortions around voids; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 485; 4; 3-2019; 5761-5772
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/120705
identifier_str_mv Correa, Carlos Mauricio; Paz, Dante Javier; Padilla, Nelson David; Ruiz, Andrés Nicolás; Angulo, Raúl E.; et al.; Non-fiducial cosmological test from geometrical and dynamical distortions around voids; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 485; 4; 3-2019; 5761-5772
0035-8711
1365-2966
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/485/4/5761/5420432
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz821
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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