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

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 attri...

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Detalles Bibliográficos
Autores principales: Belloni, Tomaso, Méndez, Mariano R., King, Andrew J., Klis, M. van der, Paradijs, J. van
Formato: Articulo
Lenguaje:Inglés
Publicado: 1997
Materias:
Astronomía
accretion, accretion disks
binaries: close
black hole physics
instabilities
stars: individual (GRS 1915+105)
X-rays: stars
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/122919
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-122919
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
accretion, accretion disks
binaries: close
black hole physics
instabilities
stars: individual (GRS 1915+105)
X-rays: stars
spellingShingle Astronomía
accretion, accretion disks
binaries: close
black hole physics
instabilities
stars: individual (GRS 1915+105)
X-rays: stars
Belloni, Tomaso
Méndez, Mariano R.
King, Andrew J.
Klis, M. van der
Paradijs, J. van
A unified model for the spectral variability in GRS 1915+105
topic_facet Astronomía
accretion, accretion disks
binaries: close
black hole physics
instabilities
stars: individual (GRS 1915+105)
X-rays: stars
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.
format Articulo
Articulo
author Belloni, Tomaso
Méndez, Mariano R.
King, Andrew J.
Klis, M. van der
Paradijs, J. van
author_facet Belloni, Tomaso
Méndez, Mariano R.
King, Andrew J.
Klis, M. van der
Paradijs, J. van
author_sort Belloni, Tomaso
title A unified model for the spectral variability in GRS 1915+105
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 unified model for the spectral variability in grs 1915+105
publishDate 1997
url http://sedici.unlp.edu.ar/handle/10915/122919
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