Hard X-ray Mapping of Galaxy Clusters

摘要

Hard X-ray emission from clusters of galaxies is important to probe the acceleration phenomena in the largest system in the universe. Here we presented Suzaku observations of A3376 and A3667. Upper limit of nonthermal hard X-ray emission gives a reasonable lower limit of intracluster magnetic field. Extremely hot gas component is found in A3667, indicating a suprathermal emission. We will suggest a possible hard X-ray mapping with MAXI to constrain the spatial distribution of hard X-ray emission.