在船帆座X-1中见证磁层边界的工作
Witnessing the magnetospheric boundary at work in Vela X-1
摘要：
我们提出了一个分析船帆座X-1的“关闭状态”的基础上朱雀在2008年6月采取的观测。定义为状态，其中通量突然下降低于仪器的灵敏度，这些“关状态”已被解释为“螺旋桨制度”的发病的几个作者。然而，我们有史以来第一次发现源没有关闭，尽管在记录的三个“关闭状态”期间通量下降了20倍，但仍然观察到脉动。给出了“关态”的光谱和脉冲波形。最后，我们讨论了我们的研究结果的框架下的“门吸积”的情况下，并得出结论，最有可能的剩余通量是由于通过Kelvin-Helmholz不稳定性（KHI）的磁层泄漏的物质的吸积。
英文摘要：
We present an analysis of the Vela X-1's "off-states" based on Suzaku observations taken in June 2008. Defined as states in which the flux sudden decreases below the instrumental sensitivity, these "off-states" have been interpreted by several authors as the onset of the "propeller regime". For the first time ever, however, we find that the source does not turn off and, although the flux drops by a factor of 20 during the three recorded "off-states", pulsations are still observed. The spectrum and the pulse-profiles of the "off-states" are also presented. Eventually, we discuss our findings in framework of the "gated accretion" scenario and conclude that most likely the residual flux is due to the accretion of matter leaking through the magnetosphere by means of Kelvin-Helmholz instabilities (KHI).
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