A unified model for the spectral variability in GRS 1915+105

Autores
Belloni, Tomaso; Méndez, Mariano R.; King, Andrew J.; Klis, M. van der; Paradijs, J. van
Año de publicación
1997
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have analyzed the spectral variations of the superluminal black hole X-ray binary GRS 1915+105 by using data obtained with the PCA on the Rossi XTE. We find that, despite the marked differences in the structure and the timescale of variability, all spectral changes can be attributed to the rapid disappearing of the inner region of an accretion disk, followed by a slower refilling of the emptied region. The timescale for each event is determined by the extent of the missing part of the disk. The observed relation between the duration of an event and the radius of the disappearing region matches remarkably well the expected radius dependence of the viscous timescale for the radiation-pressure-dominated region of an accretion disk.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Astronomía
accretion, accretion disks
binaries: close
black hole physics
instabilities
stars: individual (GRS 1915+105)
X-rays: stars
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/122919
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/122919
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling A unified model for the spectral variability in GRS 1915+105Belloni, TomasoMéndez, Mariano R.King, Andrew J.Klis, M. van derParadijs, J. vanAstronomíaaccretion, accretion disksbinaries: closeblack hole physicsinstabilitiesstars: individual (GRS 1915+105)X-rays: starsWe have analyzed the spectral variations of the superluminal black hole X-ray binary GRS 1915+105 by using data obtained with the PCA on the <i>Rossi XTE</i>. We find that, despite the marked differences in the structure and the timescale of variability, all spectral changes can be attributed to the rapid disappearing of the inner region of an accretion disk, followed by a slower refilling of the emptied region. The timescale for each event is determined by the extent of the missing part of the disk. The observed relation between the duration of an event and the radius of the disappearing region matches remarkably well the expected radius dependence of the viscous timescale for the radiation-pressure-dominated region of an accretion disk.Facultad de Ciencias Astronómicas y Geofísicas1997-10-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf109-112http://sedici.unlp.edu.ar/handle/10915/122919enginfo:eu-repo/semantics/altIdentifier/issn/0004-637Xinfo:eu-repo/semantics/altIdentifier/doi/10.1086/310944info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:10:09Zoai:sedici.unlp.edu.ar:10915/122919Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:10:10.218SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A unified model for the spectral variability in GRS 1915+105
title A unified model for the spectral variability in GRS 1915+105
spellingShingle A unified model for the spectral variability in GRS 1915+105
Belloni, Tomaso
Astronomía
accretion, accretion disks
binaries: close
black hole physics
instabilities
stars: individual (GRS 1915+105)
X-rays: stars
title_short A unified model for the spectral variability in GRS 1915+105
title_full A unified model for the spectral variability in GRS 1915+105
title_fullStr A unified model for the spectral variability in GRS 1915+105
title_full_unstemmed A unified model for the spectral variability in GRS 1915+105
title_sort A unified model for the spectral variability in GRS 1915+105
dc.creator.none.fl_str_mv Belloni, Tomaso
Méndez, Mariano R.
King, Andrew J.
Klis, M. van der
Paradijs, J. van
author Belloni, Tomaso
author_facet Belloni, Tomaso
Méndez, Mariano R.
King, Andrew J.
Klis, M. van der
Paradijs, J. van
author_role author
author2 Méndez, Mariano R.
King, Andrew J.
Klis, M. van der
Paradijs, J. van
author2_role author
author
author
author
dc.subject.none.fl_str_mv Astronomía
accretion, accretion disks
binaries: close
black hole physics
instabilities
stars: individual (GRS 1915+105)
X-rays: stars
topic Astronomía
accretion, accretion disks
binaries: close
black hole physics
instabilities
stars: individual (GRS 1915+105)
X-rays: stars
dc.description.none.fl_txt_mv We have analyzed the spectral variations of the superluminal black hole X-ray binary GRS 1915+105 by using data obtained with the PCA on the <i>Rossi XTE</i>. We find that, despite the marked differences in the structure and the timescale of variability, all spectral changes can be attributed to the rapid disappearing of the inner region of an accretion disk, followed by a slower refilling of the emptied region. The timescale for each event is determined by the extent of the missing part of the disk. The observed relation between the duration of an event and the radius of the disappearing region matches remarkably well the expected radius dependence of the viscous timescale for the radiation-pressure-dominated region of an accretion disk.
Facultad de Ciencias Astronómicas y Geofísicas
description We have analyzed the spectral variations of the superluminal black hole X-ray binary GRS 1915+105 by using data obtained with the PCA on the <i>Rossi XTE</i>. We find that, despite the marked differences in the structure and the timescale of variability, all spectral changes can be attributed to the rapid disappearing of the inner region of an accretion disk, followed by a slower refilling of the emptied region. The timescale for each event is determined by the extent of the missing part of the disk. The observed relation between the duration of an event and the radius of the disappearing region matches remarkably well the expected radius dependence of the viscous timescale for the radiation-pressure-dominated region of an accretion disk.
publishDate 1997
dc.date.none.fl_str_mv 1997-10-20
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/122919
url http://sedici.unlp.edu.ar/handle/10915/122919
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-637X
info:eu-repo/semantics/altIdentifier/doi/10.1086/310944
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
109-112
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.982451

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