We review the present theoretical and numerical understanding of magnetic field amplification in cosmic large-scale structure, on length scales of galaxy clusters and beyond. Structure formation drives compression and turbulence, which amplify tiny magnetic seed fields to the microGauss values that are observed in the intracluster medium. This process is intimately connected to the properties of turbulence and the microphysics of the intra-cluster medium. Additional roles are played by merger induced shocks that sweep through the intra-cluster medium and motions induced by sloshing cool cores. The accurate simulation of magnetic field amplification in clusters still poses a serious challenge for simulations of cosmological structure formation. We review the current literature on cosmological simulations that include magnetic fields and outline theoretical as well as numerical challenges.

中文翻译：

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星系团中的磁场放大及其模拟

我们回顾了目前对宇宙大尺度结构、星系团长度尺度及其他方面磁场放大的理论和数值理解。结构形成驱动压缩和湍流，将微小的磁种子场放大到在簇内介质中观察到的微高斯值。这个过程与湍流的特性和簇内介质的微观物理学密切相关。合并引起的冲击穿过簇内介质和晃动的冷核引起的运动也起到了额外的作用。簇内磁场放大的精确模拟仍然对宇宙结构形成的模拟提出了严峻的挑战。