Testing f (R) gravity models with quasar x-ray and UV fluxes

Autores
Leizerovich, Matías; Kraiselburd, Lucila; Landau, Susana Judith; Scoccola, Claudia Graciela
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Recently, active galactic nuclei (AGN) have been proposed as "standardizable candles,"thanks to an observed nonlinear relation between their x-ray and optical-ultraviolet (UV) luminosities, which provides an independent measurement of their distances. In this paper, we use these observables for the first time to estimate the parameters of f(R) gravity models (specifically, the Hu-Sawicki and the exponential models) together with the cosmological parameters. The importance of these types of modified gravity theories lies in the fact that they can explain the late time accelerated expansion of the universe without the inclusion of a dark energy component. We have also included other observable data to the analyses such as estimates of the Hubble parameter H(z) from cosmic chronometers (CCs), the Pantheon Type Ia (SnIa) supernovae compilation, and baryon acoustic oscillation (BAO) measurements. The 1σ inferred constraints using all datasets are b≤0.276, ωm=0.304-0.011+0.010, and H0=67.553-0.936+1.242 for the Hu-Sawicki model, and b=0.785-0.606+0.409 ωm=0.305-0.010+0.011 and H0=68.348-0.760+0.959 for the exponential one, but we stress that for both f(R) models results within 2σ are consistent with the Λ cold dark matter (CDM) model. Our results show that the allowed space parameter is restricted when both AGN and BAO data are added to CC and SnIa data, with the BAO dataset being the most restrictive one. We can conclude that both the ΛCDM model and small deviations from general relativity given by the f(R) models studied in this paper are allowed by the considered observational datasets.
Fil: Leizerovich, Matías. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Kraiselburd, Lucila. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Landau, Susana Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Scoccola, Claudia Graciela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Materia
GRAVITY
ALTERNATIVE
TESTS
AGN
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:11336/188227
Acceder
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spelling Testing f (R) gravity models with quasar x-ray and UV fluxesLeizerovich, MatíasKraiselburd, LucilaLandau, Susana JudithScoccola, Claudia GracielaGRAVITYALTERNATIVETESTSAGNhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Recently, active galactic nuclei (AGN) have been proposed as "standardizable candles,"thanks to an observed nonlinear relation between their x-ray and optical-ultraviolet (UV) luminosities, which provides an independent measurement of their distances. In this paper, we use these observables for the first time to estimate the parameters of f(R) gravity models (specifically, the Hu-Sawicki and the exponential models) together with the cosmological parameters. The importance of these types of modified gravity theories lies in the fact that they can explain the late time accelerated expansion of the universe without the inclusion of a dark energy component. We have also included other observable data to the analyses such as estimates of the Hubble parameter H(z) from cosmic chronometers (CCs), the Pantheon Type Ia (SnIa) supernovae compilation, and baryon acoustic oscillation (BAO) measurements. The 1σ inferred constraints using all datasets are b≤0.276, ωm=0.304-0.011+0.010, and H0=67.553-0.936+1.242 for the Hu-Sawicki model, and b=0.785-0.606+0.409 ωm=0.305-0.010+0.011 and H0=68.348-0.760+0.959 for the exponential one, but we stress that for both f(R) models results within 2σ are consistent with the Λ cold dark matter (CDM) model. Our results show that the allowed space parameter is restricted when both AGN and BAO data are added to CC and SnIa data, with the BAO dataset being the most restrictive one. We can conclude that both the ΛCDM model and small deviations from general relativity given by the f(R) models studied in this paper are allowed by the considered observational datasets.Fil: Leizerovich, Matías. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Kraiselburd, Lucila. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Landau, Susana Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Scoccola, Claudia Graciela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaAmerican Physical Society2022-04info: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/11336/188227Leizerovich, Matías; Kraiselburd, Lucila; Landau, Susana Judith; Scoccola, Claudia Graciela; Testing f (R) gravity models with quasar x-ray and UV fluxes; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 105; 10; 4-2022; 1-141550-79982470-0029CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.105.103526info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.105.103526info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:54Zoai:ri.conicet.gov.ar:11336/188227instacron: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:34982025-09-29 09:50:54.644CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Testing f (R) gravity models with quasar x-ray and UV fluxes
title Testing f (R) gravity models with quasar x-ray and UV fluxes
spellingShingle Testing f (R) gravity models with quasar x-ray and UV fluxes
Leizerovich, Matías
GRAVITY
ALTERNATIVE
TESTS
AGN
title_short Testing f (R) gravity models with quasar x-ray and UV fluxes
title_full Testing f (R) gravity models with quasar x-ray and UV fluxes
title_fullStr Testing f (R) gravity models with quasar x-ray and UV fluxes
title_full_unstemmed Testing f (R) gravity models with quasar x-ray and UV fluxes
title_sort Testing f (R) gravity models with quasar x-ray and UV fluxes
dc.creator.none.fl_str_mv Leizerovich, Matías
Kraiselburd, Lucila
Landau, Susana Judith
Scoccola, Claudia Graciela
author Leizerovich, Matías
author_facet Leizerovich, Matías
Kraiselburd, Lucila
Landau, Susana Judith
Scoccola, Claudia Graciela
author_role author
author2 Kraiselburd, Lucila
Landau, Susana Judith
Scoccola, Claudia Graciela
author2_role author
author
author
dc.subject.none.fl_str_mv GRAVITY
ALTERNATIVE
TESTS
AGN
topic GRAVITY
ALTERNATIVE
TESTS
AGN
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Recently, active galactic nuclei (AGN) have been proposed as "standardizable candles,"thanks to an observed nonlinear relation between their x-ray and optical-ultraviolet (UV) luminosities, which provides an independent measurement of their distances. In this paper, we use these observables for the first time to estimate the parameters of f(R) gravity models (specifically, the Hu-Sawicki and the exponential models) together with the cosmological parameters. The importance of these types of modified gravity theories lies in the fact that they can explain the late time accelerated expansion of the universe without the inclusion of a dark energy component. We have also included other observable data to the analyses such as estimates of the Hubble parameter H(z) from cosmic chronometers (CCs), the Pantheon Type Ia (SnIa) supernovae compilation, and baryon acoustic oscillation (BAO) measurements. The 1σ inferred constraints using all datasets are b≤0.276, ωm=0.304-0.011+0.010, and H0=67.553-0.936+1.242 for the Hu-Sawicki model, and b=0.785-0.606+0.409 ωm=0.305-0.010+0.011 and H0=68.348-0.760+0.959 for the exponential one, but we stress that for both f(R) models results within 2σ are consistent with the Λ cold dark matter (CDM) model. Our results show that the allowed space parameter is restricted when both AGN and BAO data are added to CC and SnIa data, with the BAO dataset being the most restrictive one. We can conclude that both the ΛCDM model and small deviations from general relativity given by the f(R) models studied in this paper are allowed by the considered observational datasets.
Fil: Leizerovich, Matías. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Kraiselburd, Lucila. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Landau, Susana Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Scoccola, Claudia Graciela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
description Recently, active galactic nuclei (AGN) have been proposed as "standardizable candles,"thanks to an observed nonlinear relation between their x-ray and optical-ultraviolet (UV) luminosities, which provides an independent measurement of their distances. In this paper, we use these observables for the first time to estimate the parameters of f(R) gravity models (specifically, the Hu-Sawicki and the exponential models) together with the cosmological parameters. The importance of these types of modified gravity theories lies in the fact that they can explain the late time accelerated expansion of the universe without the inclusion of a dark energy component. We have also included other observable data to the analyses such as estimates of the Hubble parameter H(z) from cosmic chronometers (CCs), the Pantheon Type Ia (SnIa) supernovae compilation, and baryon acoustic oscillation (BAO) measurements. The 1σ inferred constraints using all datasets are b≤0.276, ωm=0.304-0.011+0.010, and H0=67.553-0.936+1.242 for the Hu-Sawicki model, and b=0.785-0.606+0.409 ωm=0.305-0.010+0.011 and H0=68.348-0.760+0.959 for the exponential one, but we stress that for both f(R) models results within 2σ are consistent with the Λ cold dark matter (CDM) model. Our results show that the allowed space parameter is restricted when both AGN and BAO data are added to CC and SnIa data, with the BAO dataset being the most restrictive one. We can conclude that both the ΛCDM model and small deviations from general relativity given by the f(R) models studied in this paper are allowed by the considered observational datasets.
publishDate 2022
dc.date.none.fl_str_mv 2022-04
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/11336/188227
Leizerovich, Matías; Kraiselburd, Lucila; Landau, Susana Judith; Scoccola, Claudia Graciela; Testing f (R) gravity models with quasar x-ray and UV fluxes; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 105; 10; 4-2022; 1-14
1550-7998
2470-0029
CONICET Digital
CONICET
url http://hdl.handle.net/11336/188227
identifier_str_mv Leizerovich, Matías; Kraiselburd, Lucila; Landau, Susana Judith; Scoccola, Claudia Graciela; Testing f (R) gravity models with quasar x-ray and UV fluxes; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 105; 10; 4-2022; 1-14
1550-7998
2470-0029
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://journals.aps.org/prd/abstract/10.1103/PhysRevD.105.103526
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.105.103526
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 American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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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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