Discovery of the 51.47-d orbital period in the supergiant fast X-ray transient XTE J1739-302 with INTEGRAL

S. P. Drave, D. J. Clark, A. J. Bird, V. A. McBride, A. B. Hill, V. Sguera, S. Scaringi, A. Bazzano

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

Timing analysis of 12.4 Ms of INTEGRAL/IBIS data has revealed a period of 51.47 ± 0.02 d in the supergiant fast X-ray transient source XTE J1739-302/IGR J17391-3021 that can be interpreted as an orbital period. An outburst history showing 35 epochs of activity has been produced, showing X-ray outbursts throughout the orbit of XTE J1739-302. Possible indications of an enhanced equatorial density region within the supergiant stellar wind are present in the phase-folded light curve. It is found that many orbital configurations are possible within this system with eccentricities of up to e 0.8.

Original languageEnglish
Pages (from-to)1220-1226
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume409
Issue number3
DOIs
StatePublished - Dec 2010

Keywords

  • Stars: winds, outflows
  • X-rays: binaries
  • X-rays: bursts
  • X-rays: individual: XTE J1739-302

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