Radio Emission from Pulsar Wind Nebulae without Surrounding Supernova Ejecta: Application to FRB 121102
Radio Emission from Pulsar Wind Nebulae without Surrounding Supernova Ejecta: Application to FRB 121102
复制标题
没有周围超新星喷射物的脉冲星风星云的射电发射：对 FRB 121102 的应用
DOI：
10.3847/2041-8213/aa6745
复制
发表时间：
2017
影响因子：
7.9
通讯作者：
Yu Y W
中科院分区：
文献类型：
--
作者：
Dai Z G;Wang J S;Yu Y W
在本文中，我们提出了一种新的假设：一个快速旋转的强磁化脉冲星没有任何周围的超新星喷射物，通过一系列可能的机制重复产生快速射电爆发(FRB)；同时，来自脉冲星的超相对论电子/正电子对风席卷其周围致密的星际介质，产生非相对论脉冲星风星云(PWN)。结果表明，在模型参数的合理范围内，来自这样一个PWN的同步加速器射电辐射足够明亮，足以解释最近发现的与重复的FRB121102有关的持久射电源。我们的PWN情景与从四年中观察到的所有重复爆发中推断出的色散度量没有演变是一致的。
In this paper, we propose a new scenario in which a rapidly rotating strongly magnetized pulsar without any surrounding supernova ejecta repeatedly produces fast radio bursts (FRBs) via a range of possible mechanisms; simultaneously, an ultra-relativistic electron/positron pair wind from the pulsar sweeps up its ambient dense interstellar medium, giving rise to a non-relativistic pulsar wind nebula (PWN). We show that the synchrotron radio emission from such a PWN is bright enough to account for the recently discovered persistent radio source associated with the repeating FRB 121102 within reasonable ranges of the model parameters. Our PWN scenario is consistent with the non-evolution of the dispersion measure inferred from all of the repeating bursts observed in four years.