Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1

Autores
Mancuso, Giulio Cesare; Altamirano, D; Méndez, M.; Lyu, M; Combi, Jorge Ariel
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We detect millihertz quasi-periodic oscillations (mHz QPOs) using the Rossi X-ray Time Explorer (RXTE) from the atoll neutron-star (NS) low-mass X-ray binaries 4U 1608-52 and Aql X-1. From the analysis of all RXTE observations of 4U 1608-52 and Aql X-1, we find mHz QPOs with a significance level >3σ in 49 and 47 observations, respectively. The QPO frequency is constrained between ∼4.2 and 13.4 mHz. These types of mHz QPOs have been interpreted as being the result of marginally stable nuclear burning of He on the NS surface. We also report the discovery of a downward frequency drift in three observations of 4U 1608-52, making it the third source that shows this behaviour. We only find strong evidence of frequency drift in one occasion in Aql X-1, probably because the observations were too short to measure a significant drift. Finally, the mHz QPOs are mainly detected when both sources are in the soft or intermediate states; the cases that show frequency drift only occur when the sources are in intermediate states. Our results are consistent with the phenomenology observed for the NS systems 4U 1636-53 and EXO 0748-676, suggesting that all four sources can reach the conditions for marginally stable burning of He on the NS surface. These conditions depend on the source state in the same manner in all four systems.
Fil: Mancuso, Giulio Cesare. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Altamirano, D. University of Southampton; Reino Unido
Fil: Méndez, M.. University Of Groningen; Países Bajos
Fil: Lyu, M. Xiangtan University; China
Fil: Combi, Jorge Ariel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Materia
ACCRETION, ACCRETION DISCS
STARS: NEUTRON
X-RAYS: BINARIES
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:11336/135285
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/135285
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1Mancuso, Giulio CesareAltamirano, DMéndez, M.Lyu, MCombi, Jorge ArielACCRETION, ACCRETION DISCSSTARS: NEUTRONX-RAYS: BINARIEShttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We detect millihertz quasi-periodic oscillations (mHz QPOs) using the Rossi X-ray Time Explorer (RXTE) from the atoll neutron-star (NS) low-mass X-ray binaries 4U 1608-52 and Aql X-1. From the analysis of all RXTE observations of 4U 1608-52 and Aql X-1, we find mHz QPOs with a significance level >3σ in 49 and 47 observations, respectively. The QPO frequency is constrained between ∼4.2 and 13.4 mHz. These types of mHz QPOs have been interpreted as being the result of marginally stable nuclear burning of He on the NS surface. We also report the discovery of a downward frequency drift in three observations of 4U 1608-52, making it the third source that shows this behaviour. We only find strong evidence of frequency drift in one occasion in Aql X-1, probably because the observations were too short to measure a significant drift. Finally, the mHz QPOs are mainly detected when both sources are in the soft or intermediate states; the cases that show frequency drift only occur when the sources are in intermediate states. Our results are consistent with the phenomenology observed for the NS systems 4U 1636-53 and EXO 0748-676, suggesting that all four sources can reach the conditions for marginally stable burning of He on the NS surface. These conditions depend on the source state in the same manner in all four systems.Fil: Mancuso, Giulio Cesare. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Altamirano, D. University of Southampton; Reino UnidoFil: Méndez, M.. University Of Groningen; Países BajosFil: Lyu, M. Xiangtan University; ChinaFil: Combi, Jorge Ariel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaWiley Blackwell Publishing, Inc2021-04info: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/11336/135285Mancuso, Giulio Cesare; Altamirano, D; Méndez, M.; Lyu, M; Combi, Jorge Ariel; Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 502; 2; 4-2021; 1856-18630035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/502/2/1856/6105346info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stab159info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:03:50Zoai:ri.conicet.gov.ar:11336/135285instacron: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 10:03:50.543CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1
title Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1
spellingShingle Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1
Mancuso, Giulio Cesare
ACCRETION, ACCRETION DISCS
STARS: NEUTRON
X-RAYS: BINARIES
title_short Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1
title_full Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1
title_fullStr Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1
title_full_unstemmed Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1
title_sort Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1
dc.creator.none.fl_str_mv Mancuso, Giulio Cesare
Altamirano, D
Méndez, M.
Lyu, M
Combi, Jorge Ariel
author Mancuso, Giulio Cesare
author_facet Mancuso, Giulio Cesare
Altamirano, D
Méndez, M.
Lyu, M
Combi, Jorge Ariel
author_role author
author2 Altamirano, D
Méndez, M.
Lyu, M
Combi, Jorge Ariel
author2_role author
author
author
author
dc.subject.none.fl_str_mv ACCRETION, ACCRETION DISCS
STARS: NEUTRON
X-RAYS: BINARIES
topic ACCRETION, ACCRETION DISCS
STARS: NEUTRON
X-RAYS: BINARIES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We detect millihertz quasi-periodic oscillations (mHz QPOs) using the Rossi X-ray Time Explorer (RXTE) from the atoll neutron-star (NS) low-mass X-ray binaries 4U 1608-52 and Aql X-1. From the analysis of all RXTE observations of 4U 1608-52 and Aql X-1, we find mHz QPOs with a significance level >3σ in 49 and 47 observations, respectively. The QPO frequency is constrained between ∼4.2 and 13.4 mHz. These types of mHz QPOs have been interpreted as being the result of marginally stable nuclear burning of He on the NS surface. We also report the discovery of a downward frequency drift in three observations of 4U 1608-52, making it the third source that shows this behaviour. We only find strong evidence of frequency drift in one occasion in Aql X-1, probably because the observations were too short to measure a significant drift. Finally, the mHz QPOs are mainly detected when both sources are in the soft or intermediate states; the cases that show frequency drift only occur when the sources are in intermediate states. Our results are consistent with the phenomenology observed for the NS systems 4U 1636-53 and EXO 0748-676, suggesting that all four sources can reach the conditions for marginally stable burning of He on the NS surface. These conditions depend on the source state in the same manner in all four systems.
Fil: Mancuso, Giulio Cesare. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Altamirano, D. University of Southampton; Reino Unido
Fil: Méndez, M.. University Of Groningen; Países Bajos
Fil: Lyu, M. Xiangtan University; China
Fil: Combi, Jorge Ariel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
description We detect millihertz quasi-periodic oscillations (mHz QPOs) using the Rossi X-ray Time Explorer (RXTE) from the atoll neutron-star (NS) low-mass X-ray binaries 4U 1608-52 and Aql X-1. From the analysis of all RXTE observations of 4U 1608-52 and Aql X-1, we find mHz QPOs with a significance level >3σ in 49 and 47 observations, respectively. The QPO frequency is constrained between ∼4.2 and 13.4 mHz. These types of mHz QPOs have been interpreted as being the result of marginally stable nuclear burning of He on the NS surface. We also report the discovery of a downward frequency drift in three observations of 4U 1608-52, making it the third source that shows this behaviour. We only find strong evidence of frequency drift in one occasion in Aql X-1, probably because the observations were too short to measure a significant drift. Finally, the mHz QPOs are mainly detected when both sources are in the soft or intermediate states; the cases that show frequency drift only occur when the sources are in intermediate states. Our results are consistent with the phenomenology observed for the NS systems 4U 1636-53 and EXO 0748-676, suggesting that all four sources can reach the conditions for marginally stable burning of He on the NS surface. These conditions depend on the source state in the same manner in all four systems.
publishDate 2021
dc.date.none.fl_str_mv 2021-04
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/11336/135285
Mancuso, Giulio Cesare; Altamirano, D; Méndez, M.; Lyu, M; Combi, Jorge Ariel; Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 502; 2; 4-2021; 1856-1863
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/135285
identifier_str_mv Mancuso, Giulio Cesare; Altamirano, D; Méndez, M.; Lyu, M; Combi, Jorge Ariel; Drifts of the marginally stable burning frequency in the X-ray binaries 4U 1608–52 and Aql X–1; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 502; 2; 4-2021; 1856-1863
0035-8711
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/502/2/1856/6105346
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stab159
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 13.070432

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