合并中子星双星的重新连接供能快速射电暴。
Reconnection-Powered Fast Radio Transients from Coalescing Neutron Star Binaries.
机构信息
Princeton Center for Theoretical Science, Princeton University, Princeton, New Jersey 08544, USA.
Princeton Gravity Initiative, Princeton University, Princeton, New Jersey 08544, USA.
出版信息
Phys Rev Lett. 2023 Jun 16;130(24):245201. doi: 10.1103/PhysRevLett.130.245201.
It is an open question whether and how gravitational wave events involving neutron stars can be preceded by electromagnetic counterparts. This Letter shows that the collision of two neutron stars with magnetic fields well below magnetar-level strengths can produce millisecond fast-radio-burst-like transients. Using global force-free electrodynamics simulations, we identify the coherent emission mechanism that might operate in the common magnetosphere of a binary neutron star system prior to merger. We predict that the emission show have frequencies in the range of 10-20 GHz for magnetic fields of B^{*}=10^{11} G at the surfaces of the stars.
引力波事件是否以及如何能以前兆电磁对应物为先导，这仍是一个悬而未决的问题。本文表明，即使两个具有远低于磁星强度的磁场的中子星发生碰撞，也能产生类似毫秒快射电爆发的暂态现象。通过全球无作用力电磁动力学模拟，我们确定了在双星中子星系统合并之前可能在共同磁层中运行的相干发射机制。我们预测，在双星表面的磁场为 B^*=10^{11} G 时，发射的频率范围在 10-20GHz。
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