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   PR # 11177
    Abell 2142 is the only cluster which is both classified as an optical
    binary and has a strong cooling flow.A body of evidence suggests that
    the cluster is the product of the recent merging of two subclusters.
    We will compare the hard X-ray morphology to the soft X-ray data
    obtained with the PSPC; this will lead to a clearer understanding of
    the physics of the putative merger. We will measure the temperature
    profile in the cluster to constrain the total and gas mass distribut-
    ions; these observations have important cosmological implications. A
    detailed spectral study of the cooling flow will help us to under-
    stand the fate of the cooled gas, which may form a significant fract-
    ion of the baryonic mass of the cluster.

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