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   62062
   PSR J0437-47 is the nearest millisecond pulsar, and the only one that
   can be studied well in X-rays. The leading interpretation of its
   spectrum and energy-dependent pulse shape involves thermal emission
   from heated polar caps emitting as a weakly magnetized neutron star
   atmosphere. Fundamental parameters such as M/R can be derived if this
   interpretation is correct. ASCA can confirm this model with its good
   spectral resolution and high-energy response. Previous short ASCA
   pointings at this pulsar were compromised by poor choice of observing
   modes, and failure to take into account the presence of a neighboring
   Seyfert galaxy. We will remedy this oversight with a new observation of
   PSR J0437-47 that can provide a good spectrum and pulse profile. The
   Seyfert galaxy will also be studied.
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