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COSMIC RAYS IN GALAXY CLUSTERS AND THEIR NONTHERMAL EMISSION

COSMIC RAYS IN GALAXY CLUSTERS AND THEIR NONTHERMAL EMISSION

Radio observations prove the existence of relativistic particles and magnetic field associated with the intra-cluster-medium (ICM) through the presence of extended synchrotron emission in the form of radio halos and peripheral relics. This observational evidence has fundamental implications on the physics of the ICM. Non-thermal components in galaxy clusters are …