Simulating the Enrichment of Fossil Radio Electrons by Multiple Radio Galaxies

We simulate the evolution of relativistic electrons injected into intracluster medium by five radio galaxies. study spatial transport and emission properties plasma over a ∼5 Gyr period, sequence cooling re-acceleration events experienced electrons, using Lagrangian approach joined with numerical method to model momentum spectra electrons. When compared shock waves, galaxies (here limited single injection event) in our tests are unable fuel large ∼Mpc-sized relics fossil as required current theoretical models, while previously seeded other shocks can do this. On hand, combination seeding from perturbation produce detectable, small-scale, filamentary emissions proximity (≤100–200 kpc)