论文标题
引力波事件的电磁前体：前二进制中子恒星磁层中燃烧的数值模拟
Electromagnetic precursors to gravitational wave events: Numerical simulations of flaring in pre-merger binary neutron star magnetospheres
论文作者
论文摘要
从中子星合并事件中检测引力波的检测为将重力波与短伽玛射线爆发和Kilonova余泽联系起来的多通信天文学的新领域。另一个尚未发现的 - 电磁对应物是由两个中子恒星在合并之前的磁层的非平凡相互作用产生的前体发射。通过对轨道中子星进行特殊的无力模拟，我们讨论了不同磁场取向的效果，并通过二进制中存在的差分运动可以显着增强发射，这要么是由于恒星旋转或未对准的恒星恒星磁圈。我们发现，连接两颗恒星的磁通管中的扭曲构建可以导致强大的耀斑反复发射，以进行多种轨道构型。我们还讨论了耀斑过程中潜在的相干发射机制。
The detection of gravitational waves from neutron star merger events has opened up a new field of multi-messenger astronomy linking gravitational waves events to short-gamma ray bursts and kilonova afterglows. A further - yet to be discovered - electromagnetic counterpart is precursor emission produced by the non-trivial interaction of the magnetospheres of the two neutron stars prior to merger. By performing special-relativistic force-free simulations of orbiting neutron stars we discuss the effect of different magnetic field orientations and show how the emission can be significantly enhanced by differential motion present in the binary, either due to stellar spins or misaligned stellar magnetospheres. We find that the built-up of twist in the magnetic flux tube connecting the two stars can lead to the repeated emission of powerful flares for a variety of orbital configurations. We also discuss potential coherent radio emission mechanisms in the flaring process.
