论文标题
相对论爆炸中强烈电子加热的起源
Origin of intense electron heating in relativistic blast waves
论文作者
论文摘要
伽马射线爆发余辉发射的建模在源自介导的，相对论的无碰撞冲击波的前体中见证了强烈的电子加热。在这封信中，我们提出了一个理论模型，该模型通过在减速，自我诱导的微扰动性和由电子和离子之间的惯性差异引起的相干电荷分离场中描述电子加热，这是由joule样过程引起的。通过大规模粒子中的模拟（PIC）模拟证实了该电场在电子冲击的前体中的出现。使用蒙特卡洛 - 波森法整合模型，我们将主要可观察物与PIC模拟进行了比较，以结论上述机制确实可以解释大部分电子加热。
The modeling of gamma-ray burst afterglow emission bears witness to strong electron heating in the precursor of Weibel-mediated, relativistic collisionless shock waves propagating in unmagnetized electron-ion plasmas. In this Letter, we propose a theoretical model, which describes electron heating via a Joule-like process caused by pitch-angle scattering in the decelerating, self-induced microturbulence and the coherent charge-separation field induced by the difference in inertia between electrons and ions. The emergence of this electric field across the precursor of electron-ion shocks is confirmed by large-scale particle-in-cell (PIC) simulations. Integrating the model using a Monte Carlo-Poisson method, we compare the main observables to the PIC simulations to conclude that the above mechanism can indeed account for the bulk of electron heating.
