Multiwavelength Studies and Numerical Modelling of Radio Galaxies and Galaxy Clusters

9317596伯恩斯新的x射线、光学和现在的射电观测已经证明，星系团并不像曾经设想的那样是简单的相关结构，而是经历了戏剧性的星系团/子星系团合并的动态演化系统。这项研究将支持星系团和星系团合并的多波长观测研究，并结合复杂的流体动力学和n体数值模拟，以星系团中的射电星系为中心。它将研究合并如何影响广角尾射电源、射电星团晕和陡谱射电星系的产生和演化。数值hydro/N-body模拟将用于探索重力势井和星系团气体在合并过程中的演化。磁流体动力学模拟将用于模拟星系团气体环境，包括非球形冷却流入和热不稳定性，以及射电射流在星系团大气中的传播。

9317596 Burns New X-ray, optical, and now radio observations have demonstrated that clusters of galaxies are not simple related structures as once envisioned, but rather dynamically evolving systems that have undergone dramatic cluster/subcluster merging. This research will support a multiwavelength observational study of clusters and cluster merging coupled with sophisticated hydrodynamical and N-body numerical modelling, centered around radio galaxies in clusters. It will investigate how mergers influence the creation and evolution of wide-angle tailed radio sources, cluster radio halos, and steep-spectrum radio galaxies. Numerical hydro/N-body simulations will be used to explore the evolution of the gravitational potential well and the gas in clusters during merging. Magnetohydrodynamic simulations will be used to model the cluster gaseous environment including nonspherical cooling inflows and thermal instabilities, and the propagation of radio jets through cluster atmospheres.