论文标题
双重质量转移的白色紫外二进制物作为可变引力波发射器的耦合
Coupling of Dual Mass-Transferring White-Dwarf Binaries as a Variable Gravitational-Wave Emitter
论文作者
论文摘要
我们研究了由一对质量转移的白矮人二进制文件组成的分层四体（2+2）系统的演变。在两个内轨道周期的同步状态周围应用简化的模型，我们新发现，四个身体系统可以在较小的时间间隙下定居至极限周期。周期间隙会产生发射引力波的振幅变化，作为节拍效应。根据模型参数，BEAT周期可能是1-10岁，并且可以通过空间重力波检测器观察到较大的振幅变化。
We study evolution of a hierarchical four-body (2+2) system composed by a pair of mass-transferring white dwarf binaries. Applying a simplified model around the synchronous state of two inner orbital periods, we newly find that the four body system could settle down to a limit cycle with a small period gap. The period gap generates an amplitude variation of emitted gravitational waves, as a beat effect. Depending on model parameters, the beat period could be 1-10 yr and a large amplitude variation might be observed by space gravitational-wave detectors.
