超相对论磁化终端激波的自相似结构和重联在长持续GRB流出流中的作用
Self-similar structure of ultra-relativistic magnetized termination shocks and the role of reconnection in long-lasting GRB ouflows
摘要：
本文研究了磁化风与磁化外介质相互作用产生的超相对论流的双激波结构。接触不连续（CD）是流动中的一个特殊点-密度、动压和磁场在CD上经历跳跃或非解析。为了动态连接外部区域（前向激波流）和内部区域（反向激波流），需要解决接触间断处的流动奇点。在CD上，压力仅通过两侧的磁场传递-CD变成阿尔芬切向不连续。因此，动态放大的磁场导致形成一个狭窄的磁鞘。我们讨论了一种可能性，即粒子发射早期的$X$ -射线余辉，以及费米GeV光子，加速通过磁重联过程中的后反向冲击区，特别是在磁鞘。
英文摘要：
We consider the double-shock structure of ultra-relativistic flows produced by the interaction of magnetized wind with magnetized external medium. The contact discontinuity (CD) is a special point in the flow - density, kinetic pressure and magnetic field experience a jump or are non-analytic on the CD. To connect dynamically the outside region (the forward shock flow) with the inside region (the reverse shock flow) requires resolving flow singularities at the contact discontinuity. On the CD the pressure is communicated exclusively by the magnetic field on both sides - the CD becomes an Alfven tangential discontinuity. Thus, the dynamic amplification of the magnetic field leads to a formation of a narrow magnetosheath. We discussed a possibility that particles emitting early $X$-ray afterglows, as well as Fermi GeV photons, are accelerated via magnetic reconnection processes in the post-reverse shock region, and in the magnetosheath in particular.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
