Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450

We report on the results of the spectral and timing analysis of a BeppoSAX observation of the microquasar system LS 5039/RX J1826.2-1450. The source was found in a low-flux state with Fx(1-10 keV)= 4.7 x 10^{-12} erg cm^{-2} s^{-1}, which represents almost one order of magnitude lower than a previou...

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Detalles Bibliográficos
Autores: Reig, Pablo, Ribó Gomis, Marc, Paredes i Poy, Josep Maria, Martí Ribas, Josep
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2003
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/45364
Acceso en línea:https://hdl.handle.net/2445/45364
Access Level:acceso abierto
Palabra clave:Estels
Estels binaris de raigs X
Radioastronomia
Quàsars
Stars
X-ray binaries
Radio astronomy
Quasars
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spelling Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450Reig, PabloRibó Gomis, MarcParedes i Poy, Josep MariaMartí Ribas, JosepEstelsEstels binaris de raigs XRadioastronomiaQuàsarsStarsX-ray binariesRadio astronomyQuasarsWe report on the results of the spectral and timing analysis of a BeppoSAX observation of the microquasar system LS 5039/RX J1826.2-1450. The source was found in a low-flux state with Fx(1-10 keV)= 4.7 x 10^{-12} erg cm^{-2} s^{-1}, which represents almost one order of magnitude lower than a previous RXTE observation 2.5 years before. The 0.1--10 keV spectrum is described by an absorbed power-law continuum with photon-number spectral index Gamma=1.8+-0.2 and hydrogen column density of NH=1.0^{+0.4}_{-0.3} x 10^{22} cm^{-2}. According to the orbital parameters of the system the BeppoSAX observation covers the time of an X-ray eclipse should one occur. However, the 1.6-10 keV light curve does not show evidence for such an event, which allows us to give an upper limit to the inclination of the system. The low X-ray flux detected during this observation is interpreted as a decrease in the mass accretion rate onto the compact object due to a decrease in the mass-loss rate from the primary.Springer Verlag2013201320032013info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion6 p.application/pdfhttps://hdl.handle.net/2445/45364Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361:20030674Astronomy and Astrophysics, 2003, vol. 405, num. 1, p. 285-290http://dx.doi.org/10.1051/0004-6361:20030674(c) Springer Verlag, 2003info:eu-repo/semantics/openAccessoai:recercat.cat:2445/453642026-05-29T05:05:01Z
dc.title.none.fl_str_mv Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450
title Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450
spellingShingle Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450
Reig, Pablo
Estels
Estels binaris de raigs X
Radioastronomia
Quàsars
Stars
X-ray binaries
Radio astronomy
Quasars
title_short Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450
title_full Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450
title_fullStr Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450
title_full_unstemmed Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450
title_sort Long-term X-ray variability of the microquasar system LS5039/RX J1826.2-1450
dc.creator.none.fl_str_mv Reig, Pablo
Ribó Gomis, Marc
Paredes i Poy, Josep Maria
Martí Ribas, Josep
author Reig, Pablo
author_facet Reig, Pablo
Ribó Gomis, Marc
Paredes i Poy, Josep Maria
Martí Ribas, Josep
author_role author
author2 Ribó Gomis, Marc
Paredes i Poy, Josep Maria
Martí Ribas, Josep
author2_role author
author
author
dc.subject.none.fl_str_mv Estels
Estels binaris de raigs X
Radioastronomia
Quàsars
Stars
X-ray binaries
Radio astronomy
Quasars
topic Estels
Estels binaris de raigs X
Radioastronomia
Quàsars
Stars
X-ray binaries
Radio astronomy
Quasars
description We report on the results of the spectral and timing analysis of a BeppoSAX observation of the microquasar system LS 5039/RX J1826.2-1450. The source was found in a low-flux state with Fx(1-10 keV)= 4.7 x 10^{-12} erg cm^{-2} s^{-1}, which represents almost one order of magnitude lower than a previous RXTE observation 2.5 years before. The 0.1--10 keV spectrum is described by an absorbed power-law continuum with photon-number spectral index Gamma=1.8+-0.2 and hydrogen column density of NH=1.0^{+0.4}_{-0.3} x 10^{22} cm^{-2}. According to the orbital parameters of the system the BeppoSAX observation covers the time of an X-ray eclipse should one occur. However, the 1.6-10 keV light curve does not show evidence for such an event, which allows us to give an upper limit to the inclination of the system. The low X-ray flux detected during this observation is interpreted as a decrease in the mass accretion rate onto the compact object due to a decrease in the mass-loss rate from the primary.
publishDate 2003
dc.date.none.fl_str_mv 2003
2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/45364
url https://hdl.handle.net/2445/45364
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361:20030674
Astronomy and Astrophysics, 2003, vol. 405, num. 1, p. 285-290
http://dx.doi.org/10.1051/0004-6361:20030674
dc.rights.none.fl_str_mv (c) Springer Verlag, 2003
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Springer Verlag, 2003
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 6 p.
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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