Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states

Autores
Jin, Pei; Méndez, Mariano; García, Federico; Altamirano, Diego; Vincentelli, Federico M.
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a timing analysis of Insight-HXMT observations of the black-hole X-ray binary Swift J1727.8−1613 across a bright soft X-ray flare on September 19, 2023 (MJD 60206). At the peak of the flare, the source undergoes a brief transition from the hard-intermediate state (HIMS) into the soft-intermediate state (SIMS), marked by the simultaneous appearance of three discrete radio jet ejections, a drop in broadband noise in the 2−10 keV band, and the presence of a narrow quasi-periodic oscillation (QPO) with a characteristic "U"-shaped phase-lag spectrum and a quality factor of Q ≥ 6, features that robustly identify it as a Type-B QPO. The Type-C QPO, which was clearly detected in the HIMS prior to the flare, is not observed at the flare's peak and only reappears afterward. Most notably, we find that the Type-B QPO is not restricted to the SIMS: it is present throughout all our observations, including those taken in the HIMS, where it appears as a broad shoulder of the Type-C QPO. During the flare, the Type-B and Type-C QPOs exhibit distinct evolutionary trends in frequency, fractional rms amplitude, and phase lag. These results challenge the traditional view that Type-B QPOs are exclusive to the SIMS, a state that is, in fact, defined by their appearance in the power spectrum, and directly linked to discrete jet ejections. Instead, our findings suggest that the physical conditions giving rise to Type-B QPOs occur more broadly within the inner accretion flow.
Fil: Jin, Pei. Kapteyn Astronomical Institute; Países Bajos
Fil: Méndez, Mariano. Kapteyn Astronomical Institute; Países Bajos
Fil: García, Federico. 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, Diego. University of Southampton; Reino Unido
Fil: Vincentelli, Federico M.. Istituto Nazionale di Astrofisica; Italia
Materia
ACCRETION, ACCRETION DISKS
BLACK HOLE PHYSICS
X-RAY: 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:11336/288881
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/288881
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate statesJin, PeiMéndez, MarianoGarcía, FedericoAltamirano, DiegoVincentelli, Federico M.ACCRETION, ACCRETION DISKSBLACK HOLE PHYSICSX-RAY: BINARIEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a timing analysis of Insight-HXMT observations of the black-hole X-ray binary Swift J1727.8−1613 across a bright soft X-ray flare on September 19, 2023 (MJD 60206). At the peak of the flare, the source undergoes a brief transition from the hard-intermediate state (HIMS) into the soft-intermediate state (SIMS), marked by the simultaneous appearance of three discrete radio jet ejections, a drop in broadband noise in the 2−10 keV band, and the presence of a narrow quasi-periodic oscillation (QPO) with a characteristic "U"-shaped phase-lag spectrum and a quality factor of Q ≥ 6, features that robustly identify it as a Type-B QPO. The Type-C QPO, which was clearly detected in the HIMS prior to the flare, is not observed at the flare's peak and only reappears afterward. Most notably, we find that the Type-B QPO is not restricted to the SIMS: it is present throughout all our observations, including those taken in the HIMS, where it appears as a broad shoulder of the Type-C QPO. During the flare, the Type-B and Type-C QPOs exhibit distinct evolutionary trends in frequency, fractional rms amplitude, and phase lag. These results challenge the traditional view that Type-B QPOs are exclusive to the SIMS, a state that is, in fact, defined by their appearance in the power spectrum, and directly linked to discrete jet ejections. Instead, our findings suggest that the physical conditions giving rise to Type-B QPOs occur more broadly within the inner accretion flow.Fil: Jin, Pei. Kapteyn Astronomical Institute; Países BajosFil: Méndez, Mariano. Kapteyn Astronomical Institute; Países BajosFil: García, Federico. 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, Diego. University of Southampton; Reino UnidoFil: Vincentelli, Federico M.. Istituto Nazionale di Astrofisica; ItaliaEDP Sciences2026-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/288881Jin, Pei; Méndez, Mariano; García, Federico; Altamirano, Diego; Vincentelli, Federico M.; Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states; EDP Sciences; Astronomy and Astrophysics; 706; 2-2026; 1-150004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/10.1051/0004-6361/202555907info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202555907info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:31:50Zoai:ri.conicet.gov.ar:11336/288881instacron: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:34982026-08-25 14:31:50.37CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states
title Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states
spellingShingle Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states
Jin, Pei
ACCRETION, ACCRETION DISKS
BLACK HOLE PHYSICS
X-RAY: BINARIES
title_short Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states
title_full Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states
title_fullStr Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states
title_full_unstemmed Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states
title_sort Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states
dc.creator.none.fl_str_mv Jin, Pei
Méndez, Mariano
García, Federico
Altamirano, Diego
Vincentelli, Federico M.
author Jin, Pei
author_facet Jin, Pei
Méndez, Mariano
García, Federico
Altamirano, Diego
Vincentelli, Federico M.
author_role author
author2 Méndez, Mariano
García, Federico
Altamirano, Diego
Vincentelli, Federico M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv ACCRETION, ACCRETION DISKS
BLACK HOLE PHYSICS
X-RAY: BINARIES
topic ACCRETION, ACCRETION DISKS
BLACK HOLE PHYSICS
X-RAY: BINARIES
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 timing analysis of Insight-HXMT observations of the black-hole X-ray binary Swift J1727.8−1613 across a bright soft X-ray flare on September 19, 2023 (MJD 60206). At the peak of the flare, the source undergoes a brief transition from the hard-intermediate state (HIMS) into the soft-intermediate state (SIMS), marked by the simultaneous appearance of three discrete radio jet ejections, a drop in broadband noise in the 2−10 keV band, and the presence of a narrow quasi-periodic oscillation (QPO) with a characteristic "U"-shaped phase-lag spectrum and a quality factor of Q ≥ 6, features that robustly identify it as a Type-B QPO. The Type-C QPO, which was clearly detected in the HIMS prior to the flare, is not observed at the flare's peak and only reappears afterward. Most notably, we find that the Type-B QPO is not restricted to the SIMS: it is present throughout all our observations, including those taken in the HIMS, where it appears as a broad shoulder of the Type-C QPO. During the flare, the Type-B and Type-C QPOs exhibit distinct evolutionary trends in frequency, fractional rms amplitude, and phase lag. These results challenge the traditional view that Type-B QPOs are exclusive to the SIMS, a state that is, in fact, defined by their appearance in the power spectrum, and directly linked to discrete jet ejections. Instead, our findings suggest that the physical conditions giving rise to Type-B QPOs occur more broadly within the inner accretion flow.
Fil: Jin, Pei. Kapteyn Astronomical Institute; Países Bajos
Fil: Méndez, Mariano. Kapteyn Astronomical Institute; Países Bajos
Fil: García, Federico. 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, Diego. University of Southampton; Reino Unido
Fil: Vincentelli, Federico M.. Istituto Nazionale di Astrofisica; Italia
description We present a timing analysis of Insight-HXMT observations of the black-hole X-ray binary Swift J1727.8−1613 across a bright soft X-ray flare on September 19, 2023 (MJD 60206). At the peak of the flare, the source undergoes a brief transition from the hard-intermediate state (HIMS) into the soft-intermediate state (SIMS), marked by the simultaneous appearance of three discrete radio jet ejections, a drop in broadband noise in the 2−10 keV band, and the presence of a narrow quasi-periodic oscillation (QPO) with a characteristic "U"-shaped phase-lag spectrum and a quality factor of Q ≥ 6, features that robustly identify it as a Type-B QPO. The Type-C QPO, which was clearly detected in the HIMS prior to the flare, is not observed at the flare's peak and only reappears afterward. Most notably, we find that the Type-B QPO is not restricted to the SIMS: it is present throughout all our observations, including those taken in the HIMS, where it appears as a broad shoulder of the Type-C QPO. During the flare, the Type-B and Type-C QPOs exhibit distinct evolutionary trends in frequency, fractional rms amplitude, and phase lag. These results challenge the traditional view that Type-B QPOs are exclusive to the SIMS, a state that is, in fact, defined by their appearance in the power spectrum, and directly linked to discrete jet ejections. Instead, our findings suggest that the physical conditions giving rise to Type-B QPOs occur more broadly within the inner accretion flow.
publishDate 2026
dc.date.none.fl_str_mv 2026-02
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/11336/288881
Jin, Pei; Méndez, Mariano; García, Federico; Altamirano, Diego; Vincentelli, Federico M.; Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states; EDP Sciences; Astronomy and Astrophysics; 706; 2-2026; 1-15
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/288881
identifier_str_mv Jin, Pei; Méndez, Mariano; García, Federico; Altamirano, Diego; Vincentelli, Federico M.; Black-hole X-ray binary Swift J1727.8–1613 shows simultaneous Type-B and Type-C quasiperiodic oscillations across the hard-intermediate and soft-intermediate states; EDP Sciences; Astronomy and Astrophysics; 706; 2-2026; 1-15
0004-6361
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://www.aanda.org/10.1051/0004-6361/202555907
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202555907
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
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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 13.265058

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