1. RRI Digital Repository
  2. 04. Astronomy and Astrophysics
  3. Research Papers (A&A)
Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3749
Full metadata record
DC FieldValueLanguage
dc.contributor.authorNaik, S.-
dc.contributor.authorMukherjee, U.-
dc.contributor.authorPaul, Biswajit-
dc.contributor.authorChol, C.S.-
dc.date.accessioned2009-05-11T10:56:46Z-
dc.date.available2009-05-11T10:56:46Z-
dc.date.issued2009-03-16-
dc.identifier.citationAdvances in Space Research, 2009, Vol. 43(6), p900-904en
dc.identifier.issn0273-1177-
dc.identifier.urihttp://hdl.handle.net/2289/3749-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractOur work focuses on a comprehensive orbital phase-dependent spectroscopy of the four High Mass X-ray Binary Pulsars (HMXBPs) 4U 1538-52, GX 301-2, OAO 1657-415 and Vela X-1. We hereby report the measurements of the variation of the absorption column density and iron-line flux along with other spectral parameters over the binary orbit for the above-mentioned HMXBPs in elliptical orbits, as observed with the Rossi X-ray Timing Explorer (RXTE) and the BeppoSAX satellites. A spherically symmetric wind profile was used as a model to compare the observed column density variations. Out of the four pulsars, only in 4U 1538-52, we find the model having a reasonable corroboration with the observations, whereas in the remaining three the stellar wind seems to be clumpy and a smooth symmetric stellar wind model appears to be quite inadequate in explaining the data. Moreover, in GX 301-2, neither the presence of a disk nor a gas stream from the companion was validated. Furthermore, the spectral results obtained in the case of OAO 1657-415 and Vela X-1 were more or less similar to that of GX 301-2.en
dc.language.isoenen
dc.publisherElsevier B.V.en
dc.relation.urihttp://dx.doi.org/10.1016/j.asr.2008.12.011en
dc.relation.urihttp://arxiv.org/abs/0812.4519en
dc.rights2008 COSPAR Published by Elsevier Ltd.en
dc.subjectPulsars: individual (4U 1538-52, GX 301-2, OAO 1657-415 and Vela X-1)en
dc.subjectStars: circumstellar matteren
dc.subjectX-rays: starsen
dc.titleOrbital phase spectroscopy of four high mass X-ray binary pulsars to study the stellar wind of the companionen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

Files in This Item:
File Description SizeFormat 
2009 Advances in Space Research_Vol_43_pp900-904.pdf
  Restricted Access		5p.294.02 kBAdobe PDFView/Open Request a copy
Show simple item record


Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.