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   PR # 11068
    With the Ginga satellite, we found that shell-like supernova remnants
    (SNRs)have hard X-ray tails in addition to the soft (typically below
    1 keV) thermal components. The most clear example of the hard X-ray
    emission was found in IC443 and HB9. To search for the origin of the
    hard Xray emission,we propose the observation of these two SNRs IC443
    and HB9. These observations are also important for the study of SNRs
    which are interacting with molecular clouds. Using ASCA, we can get a
    temperature and distribution across the remnants,and find the distrib
    ution of the hard X-ray components for the first time. With high qual
    ity X-ray spectra from several positions of the SNRs and comparison
    with the spatial distribution of the molecular cloud, we can address
   the origin of hard X-ray emiss
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