Life cycle of cosmic-ray electrons in the intracluster medium

We simulate the evolution of relativistic electrons injected into medium a small galaxy cluster by central radio galaxy, studying how initial jet power affects dispersal and emission properties plasma. By coupling passive tracer particles to adaptive-mesh cosmological MHD simulations, we study cosmic-ray are dispersed as function input power. also investigate latter thermal non-thermal intracluster medium, with differences discernible up $\sim$ Gyr after start jet. evolved energy spectra electrons, subject losses that dominated synchrotron inverse Compton well gains via re-acceleration shock waves turbulence. find in absence major mergers amount experienced is not enough produce long-lived detectable emissions. However, for all simulations role processes crucial maintain significant volume-filling reservoir fossil ($\gamma \sim 10^3$) several Gyrs first injection jets. This important possibly explain recent discoveries cluster-wide other phenomena clusters.