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   PR # 41262
   We propose to observe the distant lensing clusters of galaxies with
   great luminous arcs, which are extensively observed in optical and
   radio in order to determine the detailed dynamics and the properties
   of cluster members. Using the configurations of arcs in optical, we
   can determine the total mass and mass distribution of clusters of
   galaxies. In X-ray wavelength, the electron temperature of
   intra-cluster gas can allow us to determine them. In combine with the
   optical observations, it is possible to investigate the distribution
   of luminous dark matter. In the case of the distant clusters, we can
   also investigate the evolution of the clusters and the evolution of
   beta and core radius of clusters of galaxies.
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