论文标题
中子星级合并的电磁输出的玩具模型，迅速崩溃到黑洞：磁化中子巨星碰撞
A Toy Model for the Electromagnetic Output of Neutron-star Merger Prompt Collapse to a Black Hole: Magnetized Neutron-star Collisions
论文作者
论文摘要
我们提出了一项针对碰撞的磁性中子恒星头的系统研究。我们研究所得的磁场几何形状，因为两个中子星合并。此外，我们分析了这些碰撞中产生的光度，并监测从合并时期到随后产生黑洞的磁场的演变。在黑洞形成时，亮度峰值和圆环在电磁场的衰减之后。对三种不同的情况进行了比较，其中两个中子恒星中的初始磁场都对齐，其中一个是抗对调的，也是一种最初具有不等磁场强度的情况。我们确定区域并设定限制，以便在这种情况下发生成对的创建和磁重新连接，并进一步讨论辐射能量的极限和差异。这项研究应被视为二进制中子星合并的残留物的案例模型，该模型会迅速崩溃到一个黑洞，周围磁盘可忽略不计。我们注意到，产生的电磁脉冲类似于快速无线电爆发现象学。我们考虑对高质量合并的含义，导致快速迅速崩溃到黑洞，并在类似于二进制中子恒星重力波检测GW190425的距离下观察到预期的通量。
We present a systematic study of magnetised neutron star head on collisions. We investigate the resulting magnetic field geometries as the two neutron stars merge. Furthermore, we analyze the luminosity produced in these collisions and monitor the evolution of the magnetic fields from the time of merger until the subsequent production of a black hole. At the time of black hole formation the luminosity peaks and rings-down following the decay of the electromagnetic fields. A comparison is presented for three different cases, one where the initial magnetic field in both neutron stars is aligned, one where they are anti-aligned and also one case where they initially have unequal magnetic field strength. We identify regions and set limits so that pair creation and magnetic reconnection would occur in this scenario, and further discuss limits and differences in the radiated energy. This study should be regarded as a toy model of the case where the remnant, of a binary neutron star merger, undergoes a prompt collapse to a black hole with a negligible surrounding disk. We note that the generated electromagnetic pulses resembles the fast radio bursts phenomenology. We consider implications on the high mass mergers leading to a fast prompt collapse to a black hole and the expected flux to be observed at a distance similar to the binary neutron star gravitational wave detection GW190425.
