论文标题
ULX脉冲星，圆盘喂养的HMXB，BE/X射线二进制和双周期变量的轨道和超轨道时期
Orbital and super-orbital periods in ULX pulsars, disc-fed HMXBs, Be/X-ray binaries and double-periodic variables
论文作者
论文摘要
我们提供了超光X射线（ULX）Pulsar中轨道周期和超轨道时期之间简单线性关系的证据，类似于盘式馈送的Neutron STAR STAR超级X射线X射线二元和BE/X射线二元系统中所见的。我们认为，这种关系的最有可能的原因是通过系统的二进制运动调节吸积或折光盘中的热点或密度波的调节，这意味着ULX Pulsars与高质量X射线二进制二进制（HMXB）之间的物理联系。最近对以超级 - 埃德丁顿速率积聚的银河系和麦哲伦云HMXB的研究以及ULX脉冲星在自旋时期的位置 - HMXBS的轨道周期图的位置，支持了这一假设。在这项工作中发现的一个有趣的二次关系是盘式喂养的HMXB，ULXS和看似无关的早期型二进制组之间的明显联系，显示了所谓的“双周期”可变性。我们建议这些系统是BE/X射线二进制文件的直接祖细胞的好候选者。
We present evidence for a simple linear relationship between the orbital period and super-orbital period in ultra-luminous X-ray (ULX) pulsars, akin to what is seen in the population of disc-fed neutron star super-giant X-ray binary and Be/X-ray binary systems. We argue that the most likely cause of this relationship is the modulation of precessing hot spots or density waves in an accretion or circumstellar disc by the binary motion of the system, implying a physical link between ULX pulsars and high-mass X-ray binary (HMXB) pulsars. This hypothesis is supported by recent studies of Galactic and Magellanic Cloud HMXBs accreting at super-Eddington rates, and the position of ULX pulsars on the spin period--orbital period diagram of HMXBs. An interesting secondary relationship discovered in this work is the apparent connection between disc-fed HMXBs, ULXs and a seemingly unrelated group of early-type binaries showing so-called "double-periodic" variability. We suggest that these systems are good candidates to be the direct progenitors of Be/X-ray binaries.
