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   PR # 42079
   The association of neutron stars with supernova remnants (SNR) is a
   cornerstone of stellar astrophysics. Radio pulsars are confirmed to
   be associated with only a dozen Galactic remnants. An indirect but
   equally effective way of inferring their presence in SNR is via
   observations of pulsar powered wind nebulae (or plerions). Each new
   study of pulsar powered SNR has shed light on the birth spin periods
   and initial magnetic fields of neutron stars. A complete census of
   plerionic SNR is therefore necessary. ASCA with its broad response,
   high energy sensitivity and fine spectral resolution is unique for
   study of such combination remnants. Herein we propose to study two
   remnants with morphological telltale signs of plerionic activity: MSH
   11$-$62 and G~327.1$-$1.1.
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