标题： 来自大量星系团模拟样本的无线电辐射合并激波的起伏 显示英文标题

标题： The rise and fall of radio-luminous merger shocks from a large sample of galaxy cluster simulations

摘要： 星系团并合激波的产生是结构层次形成过程的自然结果。随着时间推移，宇宙结构通过并合以及物质不断向暗晕势阱的吸积而增长质量和尺寸。特别是，一些动力学扰动的星系团表现出壮观的非热射电特征，即射电遗迹，这些遗迹被认为能够追踪处于不同演化阶段的星系团并合激波。这些射电激波被认为是由于宇宙射线电子在星系团内磁场中的加速而被照亮的。在这项研究中，我们分析了属于“三百项目”的大量合并星系团的流体力学、宇宙学重模拟样本，以研究射电遗迹的中值演化与星系团质量和红移的关系。这一合成的星系团并合样本使我们能够详细计算从核心穿过多到消亡期间射电激波的亮度输出。 显示英文摘要

摘要： The generation of merger shocks is a natural outcome of the hierarchical process of structure formation. As time elapses cosmic structures grow in mass and size via mergers and through the continuous accretion of material onto the potential wells of dark matter haloes. In particular, some dynamically-perturbed galaxy clusters exhibit spectacular non-thermal radio features known as radio relics that are believed to trace cluster merger shocks at different stages of evolution. These radio shocks are thought to be illuminated by the acceleration of cosmic ray electrons in the presence of intracluster magnetic fields. In this contribution, we analyse a large sample of hydrodynamical, cosmological re-simulations of merging galaxy clusters belonging to The Three Hundred Project to study the median evolution of radio relics as a function of cluster mass and redshift. This synthetic cluster merger sample enables us to compute in detail the luminosity output of radio shocks from their onset at core passage to demise.