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arXiv 0811.4043astro-ph
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船尾座V中黑洞吸积的限制条件

Constraints on black hole accretion in V Puppis

Thomas J. Maccarone, Robert P. Fender, Christian Knigge, A. K. Tzioumis

摘要:

根据最近提出的食双星系统船尾座V在长轨道上有一个暗伴星的建议,我们给出了它的射电和X射线观测结果,发现它的射电流量上限约为300 $μ$ Jy,在X射线中探测到它的光度约为3 $\times10^{31}$ erg/sec,该值远低于在过去的一些低角分辨率勘测中观察到的值。这些数据与船尾座V的X射线辐射来自系统中两颗B星之间的质量转移的想法非常一致,但仍然可以容纳X射线辐射来自一颗或两颗B星的黑洞吸积恒星风的想法。

英文摘要:

In light of the recent suggestion that the nearby eclipsing binary star system V Puppis has a dark companion on a long orbit, we present the results of radio and X-ray observations of it. We find an upper limit on its radio flux of about 300 $μ$Jy and a detection of it in the X-rays with a luminosity of about 3$\times10^{31}$ erg/sec, a value much lower than what had been observed in some of the low angular resolution surveys of the past. These data are in good agreement with the idea that the X-ray emission from V Puppis comes from mass transfer between the two B stars in the system, but can still accommodate the idea that the X-ray emission comes from the black hole accreting stellar wind from one or both of the B stars.

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