An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105
We have analyzed the X-ray spectra of the microquasar GRS 1915+105, as observed with the PCA on the Rossi XTE, during periods of stable weak emission, outbursts and rapid flaring. We find that the complicated X-ray intensity curve of this source can be described by the rapid removal and replenishmen...
| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1997
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/122714 https://iopscience.iop.org/article/10.1086/310595 |
| Aporte de: |
| id |
I19-R120-10915-122714 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Physics X-ray binary Radiation Solar mass Instability Accretion (astrophysics) Astrophysics Spectral line Superluminal motion Black hole Astronomy Stars Proportional counter |
| spellingShingle |
Ciencias Astronómicas Physics X-ray binary Radiation Solar mass Instability Accretion (astrophysics) Astrophysics Spectral line Superluminal motion Black hole Astronomy Stars Proportional counter Belloni, Tomaso Méndez, Mariano King, Andrew J. van der Klis, M. van Paradijs, J. An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105 |
| topic_facet |
Ciencias Astronómicas Physics X-ray binary Radiation Solar mass Instability Accretion (astrophysics) Astrophysics Spectral line Superluminal motion Black hole Astronomy Stars Proportional counter |
| description |
We have analyzed the X-ray spectra of the microquasar GRS 1915+105, as observed with the PCA on the Rossi XTE, during periods of stable weak emission, outbursts and rapid flaring. We find that the complicated X-ray intensity curve of this source can be described by the rapid removal and replenishment of matter forming the inner part of an optically thick accretion disk, probably caused by a thermal-viscous instability analogous to that operating in dwarf novae, but here driven by the Lightman-Eardley instability. We find that the mass accretion rate in quiescence is 10^-6 solar masses per year. Only a small fraction of the energy liberated by accretion is emitted as radiation. We suggest that most of this energy is advected into the black hole in the high-viscosity state of the outburst cycle. |
| format |
Articulo Articulo |
| author |
Belloni, Tomaso Méndez, Mariano King, Andrew J. van der Klis, M. van Paradijs, J. |
| author_facet |
Belloni, Tomaso Méndez, Mariano King, Andrew J. van der Klis, M. van Paradijs, J. |
| author_sort |
Belloni, Tomaso |
| title |
An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105 |
| title_short |
An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105 |
| title_full |
An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105 |
| title_fullStr |
An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105 |
| title_full_unstemmed |
An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105 |
| title_sort |
unstable central disk in the superluminal black-hole x-ray binary grs 1915+105 |
| publishDate |
1997 |
| url |
http://sedici.unlp.edu.ar/handle/10915/122714 https://iopscience.iop.org/article/10.1086/310595 |
| work_keys_str_mv |
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Repositorios |
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