论文标题
在非均匀电场中脉冲星对级联的模型：生长速率，密度曲线和筛选时间
Model of pulsar pair cascades in non uniform electric fields: growth rate, density profile and screening time
论文作者
论文摘要
电子峰值对的时间依赖性级联对脉冲星磁层的血浆主要来源，也是解释脉冲星无线电发射的性质的主要成分，这是高能天体物理学中长期存在的开放问题。在这些级联 - 伽马射线光子发射的正反馈回路，通过TEV电子和正电子的曲率辐射以及配对的产生 - 等离子体自我一致地发展了感应波，使夫妇夫妇能够逃脱脉冲浓浓度的等离子体。在这项工作中，我们介绍了对Pulsars相关的PAIR级联反应的分析描述，包括它们的发作，指数增长和饱和阶段。在背景线性电场的情况下，我们研究了此问题，与Pulsar Polar Caps相关，并使用配对生产过程的启发式模型。通过使用Osiris进行的粒子中的粒子模拟（包括启发式对生产）证实了分析结果。
Time-dependent cascades of electron-positron pairs are thought to be the main source of plasma in pulsar magnetospheres and a primary ingredient to explain the nature of pulsar radio emission, a longstanding open problem in high-energy astrophysics. During these cascades - positive feedback loops of gamma-ray photon emission, via curvature radiation by TeV electrons and positrons, and pair production -, the plasma self-consistently develops inductive waves that couple to electromagnetic modes capable of escaping the pulsar dense plasma. In this work, we present an analytical description of pair cascades relevant in pulsars, including their onset, exponential growth and saturation stages. We study this problem in the case of a background linear electric field, relevant in pulsar polar caps, and using an heuristic model of the pair production process. The analytical results are confirmed with particle-in-cell simulations performed with OSIRIS including heuristic pair production.
