General-Relativistic Plasmas in Cosmological Backgrounds (Physics): ROW Planning Grant

将启动一项研究等离子体的计划 在早期宇宙中，当广义相对论效应由于 背景的扩大是显著的。 血浆 这一时期的动态可能会产生重要的影响， 星系形成理论和宇宙起源理论 星系间的，也可能是星系的磁场。 广义相对论和等离子体物理学的综合是一个 这是一个基本上未被触及的领域， 特别是其中的含义大多未被探索。 宇宙学等离子体的简单线性理论已经被 在单粒子近似和 磁流体动力学极限 一种动力学方法，基于 广义相对论玻尔兹曼方程。 此外，还将进行一些非线性分析。 然而，为了充分研究大多数非线性现象， 数值模拟是必要的。 因为非线性， 集体效应是最有趣的，计算机 目前正在制定调查这些影响的准则。 许多 这些守则的应用正在进行或计划中，包括， 但不限于，研究等离子体中的波动， 早期宇宙，冲击形成和加热的建模，由于 模式相互作用或阿尔芬波， 发电机和重连机制对 银河系和星系间磁场的起源。

A program of research will be initiated to study plasmas in the early Universe, when general-relativistic effects due to the expansion of the background are significant. Plasma dynamics during this epoch could have important ramifications for the theory of galaxy formation and of the origin of intergalactic, and possibly also galactic, magnetic fields. The synthesis of general relativity and plasma physics is a field that is largely untouched, and the cosmological implications in particular are mostly unexplored. The simple linear theory of cosmological plasmas has been studied in the single-particle approximation and in the magnetohydrodynamic limit. A kinetic approach, based on the general-relativistic Boltzmann equation, will be carried out. In addition, some nonlinear analysis will be performed. However, for most nonlinear phenomena to be studied adequately, numerical simulation is necessary. Because the nonlinear, collective effects are among the most interesting, computer codes are being developed to investigate such effects. Many applications of these codes are underway or planned, including, but not limited to, the study of fluctuations in plasmas in the early Universe, the modeling of shock formation and heating due to mode interactions or to Alfven waves, and the investigation of the effect of dynamo and reconnection mechanisms on the origin of galactic and intergalactic magnetic fields.