论文标题
相互作用的二进制中子星系的快速无线电爆发
Fast Radio Bursts from Interacting Binary Neutron Star Systems
论文作者
论文摘要
重复快速无线电爆发（FRB）的最新观察结果表明，某些FRB位于与二进制中子星（BNS）合并相一致的环境中。中继器的爆发速率可能很高，并且发射位点可能来自磁层。我们讨论了在BNS系统中产生丰富重复的FRB的假设。在BNS系统合并之前，数十年到几个世纪，两个中子星的磁层开始不断相互作用。突然的磁重新连接加速了颗粒，颗粒通过曲率辐射在束中发出相干的无线电波。当这些明亮的辐射梁指向地球时，检测到FRB。该模型预测两个合并中子星（分别为毫秒和秒数）以及轨道运动（分别为100 s）的旋转周期（分别为毫秒和秒数）的旋转周期（分别为毫秒和秒数）的旋转时间。随着两个中子恒星越来越近，预计爆发活动会随着时间的推移而提升。如果源足够接近，则重复的FRB源应为太空传播探测器（例如Lisa）的重力波（GW）源，当两个中子星凝聚时，最终将被基于地面检测器检测到。
Recent observations of repeating fast radio bursts (FRBs) suggest that some FRBs reside in an environment consistent with that of binary neutron star (BNS) mergers. The bursting rate for repeaters could be very high and the emission site is likely from a magnetosphere. We discuss a hypothesis of producing abundant repeating FRBs in BNS systems. Decades to centuries before a BNS system coalesces, the magnetospheres of the two neutron stars start to interact relentlessly. Abrupt magnetic reconnection accelerates particles, which emit coherent radio waves in bunches via curvature radiation. FRBs are detected as these bright radiation beams point towards Earth. This model predicts quasi-periodicity of the bursts at the rotation periods of the two merging neutron stars (tens of milliseconds and seconds, respectively) as well as the period of orbital motion (of the order of 100 s). The bursting activities are expected to elevate with time as the two neutron stars get closer. The repeating FRB sources should be gravitational wave (GW) sources for space-borne detectors such as LISA if the sources are close enough, and will be eventually detected by ground-based detectors when the two neutron stars coalesce.
