论文标题
非理想领域解决了相对论重新连接的注射问题
Non-ideal fields solve the injection problem in relativistic reconnection
论文作者
论文摘要
相对论等离子体中的磁重新连接已被很好地确定为快速有效的粒子加速器，能够解释最戏剧性的天体物理耀斑。通过粒子中的模拟，我们证明了非理想场对粒子加速的早期阶段（“注入”）的重要性。大多数以高能量结束的颗粒（每个粒子平均磁能的平均磁能）必须经过非理想的区域，在这些区域中，理想的磁流失动力学的假设被破坏（即具有$ e> b $或$ e> b $或非零$ e_ \ e_ \ e_ \ parallel的区域最终以洛伦兹的秩序统一因素。因此，非理想场注射是进一步加速的必要先决条件。我们的结果对高能天体物理学来源中非热颗粒的起源具有重要意义。
Magnetic reconnection in relativistic plasmas is well established as a fast and efficient particle accelerator, capable of explaining the most dramatic astrophysical flares. With particle-in-cell simulations, we demonstrate the importance of non-ideal fields for the early stages ("injection") of particle acceleration. Most of the particles ending up with high energies (near or above the mean magnetic energy per particle) must have passed through non-ideal regions where the assumptions of ideal magnetohydrodynamics are broken (i.e., regions with $E>B$ or nonzero $E_\parallel={\bf E}\cdot {\bf B}/B$), whereas particles that do not experience non-ideal fields end up with Lorentz factors of order unity. Thus, injection by non-ideal fields is a necessary prerequisite for further acceleration. Our results have important implications for the origin of nonthermal particles in high-energy astrophysical sources.
