论文标题
重新连接的快速无线电瞬变来自中子恒星二进制
Reconnection-powered fast radio transients from coalescing neutron star binaries
论文作者
论文摘要
这是一个开放的问题，是否以及如何在涉及中子恒星的引力波事件之前由电磁对应物进行。这项工作表明，两个具有磁场的中子恒星的碰撞远低于磁场水平的强度，可以产生毫秒的快速速率爆发瞬变。使用全球无力的电动力学模拟，我们证明了由二元磁层中的公共通量管产生的电磁耀斑与轨道电流碰撞并压缩了它，从而导致磁重新连接增强。结果，当前的片片片段分为一系列浆液，它们相互碰撞，导致相干电磁波的发射。由$ b^{\ ast} = 10^{11} \，\ rm g $的磁场的频率应在$ 10-20 \，\ rm ghz $范围内，其频率在$ 10-20 \，\ rm ghz $之间。
It is an open question whether and how gravitational wave events involving neutron stars can be preceded by electromagnetic counterparts. This work 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 demonstrate that electromagnetic flares, produced by overtwisted common flux tubes in the binary magnetosphere, collide with the orbital current sheet and compress it, resulting in enhanced magnetic reconnection. As a result, the current sheet fragments into a sequence of plasmoids, which collide with each other leading to the emission of coherent electromagnetic waves. The resulting millisecond-long burst of radiation should have frequencies in the range of $10-20\,\rm GHz$ for magnetic fields of $B^{\ast}=10^{11}\, \rm G$ at the stellar surfaces.
