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arXiv 0709.3500astro-ph
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低质量X射线双星的Bowen混合回波层析成像

Bowen blend echo-tomography of low mass X-ray binaries

T. Muñoz-Darias, I. G. Martinez-Pais, J. Casares, R. Cornelisse, V. S. Dhillon, T. R. Marsh, D. Steeghs, K. O'Brien, P. A. Charles, M. Still

摘要:

我们提出了同时高时间分辨率(1-10 Hz)的X射线和光学观测持久的LMXB的Sco X-1和V801 Ara(=4U 1636-536)。在Sco X-1的情况下,我们发现Bowen/HeII发射滞后于X射线光变曲线,光旅行时间约为11- 16 s,这与施主星的后处理一致。我们还介绍了在V801中探测到的三个相关的X射线/光学爆发。虽然后一个项目仍在进行中,我们的初步结果减去连续光变曲线从Bowen/HeII数据提供的证据轨道相位相关的回声从伴星。

英文摘要:

We present simultaneous high time resolution (1-10 Hz) X-ray and optical observations of the persistent LMXBs Sco X-1 and V801 Ara(=4U 1636-536). In the case of Sco X-1 we find that the Bowen/HeII emission lags the X-ray light-curves with a light travel time of ~11-16s which is consistent with reprocessing in the donor star. We also present the detection of three correlated X-ray/optical bursts in V801 ara. Although this latter project is still in progress our preliminary results obtained by subtracting the Continuum light-curve from the Bowen/HeII data provide evidence of orbital phase dependent echoes from the companion star.

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