Speaker
Description
Cosmological simulations predict the presence of warm, thermal gas in the cosmic filaments that connect galaxy clusters. This gas is thought to constitute an important part of the missing baryons in the Universe. In addition to the thermal gas, radio observations show that cosmic filaments between close pairs of galaxy clusters are filled with a population of relativistic particles and magnetic fields. We present our search for thermal and non-thermal diffuse emission from inter-cluster regions using a combination of eROSITA and radio telescopes. Our search involves stacked data as well as deep observations. We discuss our results in the context of the models for the formation of magnetic fields in cosmic filaments, the implications for particle acceleration and the comparison to cosmological simulations.
