标题： 非线性朗道阻尼在宇宙射线传输中的作用 显示英文标题

标题： The role of non-linear Landau damping for cosmic-ray transport

摘要： 我们首次使用混合 PIC 模拟评估了非线性朗道阻尼在高能$\beta$等离子体中自生散射过程中的作用，这些条件适用于银河系晕中的宇宙射线（CR）散射。 这种阻尼过程以背景等离子体加热和宇宙射线漂移速度降低的形式表现出来，尽管如此，宇宙射线的漂移速度仍保持超阿尔芬速度。 我们还表明，这种阻尼导致了一种逆级联过程，即产生非共振的大尺度模式，这是一个具有许多潜在现象学意义的新结果。 显示英文摘要

摘要： We present the first assessment, using hybrid PIC simulations, of the role of non-linear Landau damping in the process of self-generated scattering in a high $\beta$ plasma, conditions appropriate for CR scattering in the halo of the Galaxy. This damping process manifests itself in the form of heating of the background plasma and reduction of the drift speed of CRs that yet remains super-Alfvenic. We also show that the damping leads to an inverse cascade process, consisting of producing non-resonant large scale modes, a novel result with many potential phenomenological implications.