论文标题
定期快速无线电爆发的二进制梳子模型
A Binary Comb Model for Periodic Fast Radio Bursts
论文作者
论文摘要
我们表明，定期的FRB 180916.J0158+65可以通过调用轨道周期为$ \ sim 16 $天的相互作用的中子星二进制系统来解释。 FRB是由高度磁化的脉冲星产生的，其磁场是由伴侣恒星的强风（无论是巨大的恒星还是毫秒脉冲星）的强风``梳理''。 FRB脉冲星风在同伴的风中保留了一个清晰的漏斗，否则该漏斗是不透明的，可以不透明诱发的康普顿或拉曼散射，以重复FRB发射。为期4天的活动窗口对应于漏斗指向地球的时间。这种相互作用还使FRB脉冲星的磁层呈现，并可能触发FRB的发射。我们从观测值中得出了梳子和FRB脉冲星的物理约束，并估计了FRB的事件速率。在这种情况下，预测可观察到的FRB时期的下限。我们推测，在中子星二元系统中产生FRB，可能需要固有因素（强磁场和年轻）和外部因素（相互作用）。
We show that the periodic FRB 180916.J0158+65 can be interpreted by invoking an interacting neutron star binary system with an orbital period of $\sim 16$ days. The FRBs are produced by a highly magnetized pulsar, whose magnetic field is ``combed'' by the strong wind from a companion star, either a massive star or a millisecond pulsar. The FRB pulsar wind retains a clear funnel in the companion's wind that is otherwise opaque to induced Compton or Raman scatterings for repeating FRB emission. The 4 day active window corresponds to the time when the funnel points toward Earth. The interaction also perturbs the magnetosphere of the FRB pulsar and may trigger emission of FRBs. We derive the physical constraints on the comb and the FRB pulsar from the observations and estimate the event rate of FRBs. In this scenario, a lower limit on the period of observable FRBs is predicted. We speculate that both the intrinsic factors (strong magnetic field and young age) and the extrinsic factor (interaction) may be needed to generate FRBs in neutron star binary systems.
