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Long-term pulse profile study of the Be/X-ray pulsar SAX J2103.5+4545

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Long-term pulse profile study of the Be/X-ray pulsar SAX J2103.5+4545

dc.contributor.author	Camero Arranz, Ascensión
dc.contributor.author	Wilson, C.A.
dc.contributor.author	Finger, M. H.
dc.contributor.author	Reglero Velasco, Victor
dc.date.accessioned	2010-07-13T08:08:23Z
dc.date.available	2010-07-13T08:08:23Z
dc.date.issued	2007
dc.identifier.citation	Camero Arranz, Ascensión ; Wilson, C.A. ; Finger, M.H. ; Reglero Velasco, Victor, 2007, Long-term pulse profile study of the Be/X-ray pulsar SAX J2103.5+4545, Astronomy and astrophysics, vol. 473, no. 2, p. 551-559	en
dc.identifier.uri	http://hdl.handle.net/10550/15992
dc.description.abstract	Aims. We present the first long-term pulse profile study of the X-ray pulsar SAX J2103.5+4545. Our main goal is to study the pulse shape correlation either with luminosity, time or energy. Methods. This Be/X-ray binary system was observed from 1999 to 2004 by RXTE PCA, and by INTEGRAL from 2002 to 2005, during the Performance and Verification (PV) phase and the Galactic Plane Scan survey (GPS). X-ray pulse profiles were obtained in different energy ranges. The long-term spectral variability of this source is studied. The long-term flux, frequency and spin-up rate histories are computed. A new set of orbital parameters are also determined. Results. The pulse shape is complex and highly variable. Despite this fact, the strength of almost all the peaks increases with luminosity. In addition, an energy dependence pattern was found. Single, double, triple or even quadruple peaks pulse profile structure was obtained. It was confirmed that SAX J2103.5+4545 becomes harder when the flux is higher. The new orbital solution obtained is: Porb = 12.66528 ± 0.00051 days, e = 0.401 ± 0.018, ω = 241.36 ± 2.18 deg and ax sin i = 80.81 ± 0.67 lt-s.	en
dc.language.iso	en	en
dc.subject	X-rays ; Binaries ; Stars ; Pulsars ; Individual ; SAX J2103.5+4545 ; Close ; Emissions-line ; Be	en
dc.title	Long-term pulse profile study of the Be/X-ray pulsar SAX J2103.5+4545	en
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA	en
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia	en
dc.identifier.doi	10.1051/0004-6361:20077398	en
dc.identifier.idgrec	040370	en
dc.type.hasVersion	VoR	es_ES
dc.identifier.url	http://www.aanda.org/articles/aa/pdf/2007/38/aa7398-07.pdf	en