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arXiv 1005.4763astro-ph.HE
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超巨星快X射线瞬变IGR J16465 -4507的轨道周期

The orbital period in the supergiant fast X-ray transient IGR J16465--4507

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

摘要:

对超巨星快速X射线瞬变(SFXT)IGR J 16465 -4507的INTEGRAL-IBIS和Swift-BAT光变曲线的时间分析确定了30.32+/-0.02天的周期,我们将其解释为双星系统的轨道周期。此外,在MJD 52652到MJD 54764之间还发现了11个爆发(其中9个以前未发表),所有这些爆发都发生在我们认为是近星点的轨道区域附近。从所报道的通量爆发,我们发现一个动力学范围内的间隔~30-80。虽然在这方面,IGR J16465-4507不能被认为是一个典型的SFXT,其典型的dinamical范围是>100,但我们报告的值仍然明显大于经典的持久变星超巨星HMXB(<20),支持IGR J16465 -4507是一个中间SFXT系统的想法,就像文献中报道的其他一些类似情况一样。

英文摘要:

Timing analysis of the INTEGRAL-IBIS and Swift-BAT light curves of the Supergiant Fast X-ray Transient (SFXT) IGR J16465-4507 has identified a period of 30.32+/-0.02 days which we interpret as the orbital period of the binary system. In addition 11 outbursts (9 of which are previously unpublished) have been found between MJD 52652 to MJD 54764, all of which occur close to the region of the orbit we regard as periastron. From the reported flux outbursts, we found a dynamical range in the interval ~30-80. Although in this regard IGR J16465-4507 cannot be considered a classical SFXT for which typical dinamical ranges are >100, still our reported values are significantly greater than that of classical persistent variable supergiant HMXBs (<20), supporting the idea that IGRJ16465-4507 is an intermediate SFXT system, much like few other similar cases reported in the literature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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