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   72075
   Our systematic search for nonthermal X-ray emission from the shock
   fronts of young LMC SNRs has yielded evidence of hard spectral
   components in several remnants. The existing observations are brief
   (20-40 ks) so characterizing the spectral form is difficult. This
   difficulty is compounded by the presence of Fe K emission from at least
   3 SNRs, indicating a hard thermal component. We propose deep (90-140
   ks) followup observations of the four remnants most likely to have a
   nonthermal component: N23, N63A, N132D & N49. The Fe K line is either
   absent from the spectra of these SNRs, or is well characterized. These
   observations will allow us to meaningfully compare the nonthermal
   luminosity of LMC remnants with that of Galactic SNRs.
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