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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Simplified picture of low-mass X-ray binaries based on data from aquila X-1 and 4U 1608-52
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Simplified picture of low-mass X-ray binaries based on data from aquila X-1 and 4U 1608-52

机译：基于天鹰座X-1和4U 1608-52的数据的低质量X射线二进制文件的简化图片

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摘要

We propose a simplified picture of low-mass X-ray binaries containing a neutron star (NS-LMXBs) based on data obtained from Aql X-1 and 4U 1608-52, which often produce outbursts. In this picture we propose at least three states and three state transitions: i.e., the states: (1) soft state, (2) hard-high state, and (3) hard-low state, and the state transitions: (i) hard-high state to soft state, (ii) soft state to hard-high state, and (iii) hard-high state to hardlow state or vice versa. Gases from the accretion disc of an NS-LMXB penetrate almost the entire magnetic field and accrete onto the neutron star in cases (1) and (2), whereas in case (3) some gases accrete around the magnetic poles in a manner resembling the behavior of an X-ray pulsar, and considerable gas is dispersed or ejected by the propeller effect. Transition (iii) occurs when the Alfv?en radius is equal to the co-rotation radius. Therefore, in this case it is possible to estimate the strength of the neutron star's magnetic field by detecting transition (iii). We also discuss the no-accretion X-ray state or the recycled pulsar state, in which the Alfv?en radius is larger than the light cylinder radius.
机译：我们根据从Aql X-1和4U 1608-52获得的数据（通常会产生爆发），提出一个包含中子星（NS-LMXB）的低质量X射线双星的简化图片。在此图中，我们提出了至少三个状态和三个状态转换：即，状态：（1）软状态，（2）硬高状态和（3）硬低状态，以及状态转换：（i）从硬高状态到软状态，（ii）从软状态到硬高状态，以及（iii）从高硬状态到硬低状态，反之亦然。在情况（1）和（2）中，来自NS-LMXB吸积盘的气体几乎渗透了整个磁场并积聚到中子星上，而在情况（3）中，某些气体以类似于磁极的方式积聚在磁极周围。 X射线脉冲星的行为，并通过螺旋桨效应散布或喷射出大量气体。当Alfven半径等于同向旋转半径时，将发生过渡（iii）。因此，在这种情况下，可以通过检测跃迁（iii）来估计中子星磁场的强度。我们还讨论了Alfven半径大于光圆柱半径的无吸积X射线状态或循环脉冲星状态。

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