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   62085
   We have searched all ASCA spectra of LMC SNRs for evidence of a
   nonthermal tail. Such a tail could arise from electrons accelerated
   within the shock to highly relativistic energy, and thus indicate
   cosmic ray creation. All SNRs with diameters <13 pc have hard
   components. Most of the observations are brief (~20ks), so
   characterizing the spectral form or placing a strong limit on a
   nonthermal contribution is difficult. A search for nonthermal emission
   is further complicated by the presence in some SNR's of an Fe K line,
   indicating a hard thermal component. We propose deep observations of 4
   bright LMC SNRs, 0509-67.5, 0519-69.0, N23 and N63A, which will allow
   us to meaningfully compare the nonthermal luminosity with that of
   Galactic remnants (even in the presence of a hot thermal component).
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