论文标题
SXP 15.6-接近自旋平衡的脉冲星积聚？
SXP 15.6 -- an accreting pulsar close to spin equilibrium?
论文作者
论文摘要
SXP 15.6是最近在小麦芽云（SMC）中建立的是Star X射线二进制系统（BEXRB）。像许多这样的系统一样，可变的X射线发射是由大量供体的基本行为驱动的。这里表明，该系统中的中子恒星在几年内平均旋转平均非常接近，而大传质的动量增益几乎是通过辐射损失完全平衡的。与SMC中的所有其他知名成员相比，这使得SXP 15.6具有特殊性，所有这些成员都表现出更高的自旋时期变化。在本文中，我们报告了该系统最亮已知爆发的X射线观察。这些观察结果得到了同时的光学和无线电观察以及数年的历史数据的支持。
SXP 15.6 is a recently established Be star X-ray binary system (BeXRB) in the Small Magellanic Cloud (SMC). Like many such systems the variable X-ray emission is driven by the underlying behaviour of the mass donor Be star. It is shown here that the neutron star in this system is exceptionally close to spin equilibrium averaged over several years, with the angular momentum gain from mass transfer being almost exactly balanced by radiative losses. This makes SXP 15.6 exceptional compared to all other known members of its class in the SMC, all of whom exhibit much higher spin period changes. In this paper we report on X-ray observations of the brightest known outburst from this system. These observations are supported by contemporaneous optical and radio observations, as well as several years of historical data.
