标题： 强磁场离子-电子相对论磁重联的三维动力学 显示英文标题

标题： Three-dimensional Dynamics of Strongly Magnetized Ion-Electron Relativistic Reconnection

摘要： 我们展示了半相对论无碰撞磁重联的三维模拟，其中上游离子是亚相对论的，而电子是超相对论的。 我们采用了现实的质子与电子质量比，并探索了跨越两个数量级的上游离子磁化率范围，我们的最高磁化率运行实现了前所未有的大域尺寸。 通过参数扫描，我们发现当系统从温和的相对论到超相对论和极端相对论区域过渡时，重联的定性行为受到由漂移-环流和通量绳环流动力学所介导的三维效应的强烈影响。 因此，在高磁化情况下磁能耗散以及随后的非热粒子加速可能变得不那么有效，这与对三维相对论重联的一般预期相反。 我们的结果对于理解黑洞和中子星周围等磁化天体物理场景中的重联具有重要意义。 显示英文摘要

摘要： We present 3D simulations of semirelativistic collisionless magnetic reconnection, where upstream ions are subrelativistic while electrons are ultrarelativistic. We employ the realistic proton-to-electron mass ratio and explore a range of upstream ion magnetization spanning two orders of magnitude, with our highest-magnetization run achieving unprecedentedly large domain sizes. Through a parameter scan, we find that as the system transitions from mildly to trans- and ultrarelativistic regimes the qualitative behavior of reconnection becomes strongly influenced by 3D effects mediated by drift-kink and flux-rope kink dynamics. As a result, magnetic-energy dissipation at high magnetizations, and the subsequent nonthermal particle acceleration, can become less efficient, contrary to general expectations for 3D relativistic reconnection. Our results have important implications for understanding reconnection in magnetized astrophysical scenarios, such as the surroundings of black holes and neutron stars.