论文标题
中子恒星低质量X射线二进制的高频变异性
High-frequency variability in neutron-star low-mass X-ray binaries
论文作者
论文摘要
来自同伴星的中子主要积聚的二进制系统在X射线频段中以范围从数年到毫秒的时间尺度显示可变性。 kasi-priodic振荡（kHz QPOS）的频率最高为〜1300 Hz，代表了从任何天文学对象观察到的最快变异性。该变异性的子毫秒级尺度意味着KHz QPO在积聚流中非常接近中子星的表面，从而在宇宙中一些最强的引力场的影响下提供了物质动力学的独特视图。这提供了探究一般相对性的一些最极端预测的可能性，例如，惯性框架和periastron进攻的速度比太阳系中观察到的速度要快16个数量级，最终可能存在一个稳定的距离围绕压实物体的稳定距离。在这里，我们回顾了有关KHz QPO的最后二十年的研究，并讨论了该领域未来发展的前景。
Binary systems with a neutron-star primary accreting from a companion star display variability in the X-ray band on time scales ranging from years to milliseconds. With frequencies of up to ~1300 Hz, the kilohertz quasi-periodic oscillations (kHz QPOs) represent the fastest variability observed from any astronomical object. The sub-millisecond time scale of this variability implies that the kHz QPOs are produced in the accretion flow very close to the surface of the neutron star, providing a unique view of the dynamics of matter under the influence of some of the strongest gravitational fields in the Universe. This offers the possibility to probe some of the most extreme predictions of General Relativity, such as dragging of inertial frames and periastron precession at rates that are sixteen orders of magnitude faster than those observed in the solar system and, ultimately, the existence of a minimum distance at which a stable orbit around a compact object is possible. Here we review the last twenty years of research on kHz QPOs, and we discuss the prospects for future developments in this field.
