论文标题
脉冲星风云和超新星残留物中的分散量过多：对脉冲星和FRB的影响
A dispersion excess from pulsar wind nebulae and supernova remnants: Implications for pulsars and FRBs
论文作者
论文摘要
围绕它们的年轻脉冲星和脉冲星风星云（PWNE）或超新星残留物（SNR）是我们宇宙中一些最动态，最大的环境。随着更敏感的观察结果的兴起，Pulsar-SNR和PWN关联的数量（以下简称SNR/PWN）增加了，但我们不了解这种环境在多大程度上影响Pulsars的冲动无线电信号。我们研究了SNR和旋转对银河脉冲星的分散贡献，并考虑了它们与快速无线电爆发（FRB）的相关性，例如FRB 121102。我们研究了SNRS和PWNE的分散度（DM）贡献（DM）贡献（DM），仅通过比较SNR/PWN中的dmons中的dms dms的dms dms的dms dms vens cretine2 snr/pwn中的dms， 模型。我们发现，存在SNRS和PWNE对PULSAR信号的贡献2- $σ$ DM的贡献，总计$ 21.1 \ pm 10.6 $ PC CM $^{ - 3} $。与SNR/PWN无相关的脉冲星的对照样品没有过多。我们为样品中每个幼脉的每个年轻脉冲星建模SNR和PWN电子密度，并表明这些确实预测了过量的大小。通过推断出可能为FRB供电的快速旋转，高磁场，年轻的脉冲星，我们表明他们的SNR和PWN能够显着促进观察到的DM。
Young pulsars and the pulsar wind nebulae (PWNe) or supernova remnants (SNRs) that surround them are some of the most dynamic and high-powered environments in our Universe. With the rise of more sensitive observations, the number of pulsar-SNR and PWN associations (hereafter, SNR/PWN) has increased, yet we do not understand to which extent this environment influences the pulsars' impulsive radio signals. We studied the dispersive contribution of SNRs and PWNe on Galactic pulsars, and considered their relevance to fast radio bursts (FRBs) such as FRB 121102. We investigated the dispersion measure (DM) contribution of SNRs and PWNe by comparing the measured DMs of Galactic pulsars in a SNR/PWN to the DM expected only from the intervening interstellar electrons, using the NE2001 model. We find that a two-$σ$ DM contribution of SNRs and PWNe to the pulsar signal exists, amounting to $21.1 \pm 10.6$ pc cm$^{-3}$. The control sample of pulsars unassociated with a SNR/PWN shows no excess. We model the SNR and PWN electron densities for each young pulsar in our sample and show that these indeed predict an excess of this magnitude. By extrapolating to the kind of fast-spinning, high magnetic field, young pulsars that may power FRBs, we show their SNR and PWN are capable of significantly contributing to the observed DM.
