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   62037
   We propose an ASCA observation of V351 Puppis (Nova Puppis 1991). The
   main aim is to understand whether the emission is due to the accretion
   onto the white dwarf or to shocked ejecta. The answer to this question
   will be very important for the development of the nova theory. In the
   case of accretion we expect the X-ray spectrum of a plasma at few keV
   with solar composition and unvaried flux; in the case of shocks we
   would detect instead low plasma temperatures (around or below 1 KeV),
   prominent neon lines and a possible decrease in X-ray flux. We might
   also reveal variability on a time scale of minutes or hours and the
   interesting presence of a supersoft component.
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