Composite image of the galaxy cluster Abell 2255.
Galaxy clusters and non-thermal phenomena
Galaxy clusters are the most massive gravitationally bound structures in the Universe. They form at the intersections of the filaments of the cosmic web through a sequence of mergers. During these highly energetic events, kinetic energy is converted into the heating and dynamics of the hot gas permeating the cluster, as well as into the acceleration of particles and the amplification of magnetic fields.
The non-thermal components thus generated produce diffuse radio emissions and, potentially, radiation extending up to gamma-ray energies. At the IRA, these phenomena are studied through observations with the largest existing radio telescopes and through the development of dedicated theoretical models.
The non-thermal components thus generated produce diffuse radio emissions and, potentially, radiation extending up to gamma-ray energies. At the IRA, these phenomena are studied through observations with the largest existing radio telescopes and through the development of dedicated theoretical models.
The Institute of Radio Astronomy is involved in the following projects on the study of galaxy clusters and non-thermal phenomena:
