Discovery of the 51.47-d orbital period in the supergiant fast X-ray transient XTE J1739-302 with INTEGRAL
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- December 2010
- DOI:
- arXiv:
- arXiv:1007.3379
- Bibcode:
- 2010MNRAS.409.1220D
- Keywords:
-
- X-rays: binaries;
- X-rays: individual: XTE J1739-302;
- X-rays: bursts;
- stars: winds;
- outflows;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 8 pages, 6 figures, 2 tables, MNRAS in press