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    PR # 31010                                                                   
     Evolutionary models predict that some Wolf-Rayet (WR) stars should be       
      left with compact companions following a supernova explosion of the        
      primary in a WR + O system. However, few WR + c systems have been id       
     entified, with the WN + c system Cyg X-3 being the most convincing ca       
     ndidate. Here, we propose to obtain 30 ksec observations of two other       
      WN + c candidates which show peculiar X-ray and radio behavior- WR6        
     (EZ CMa) and WR147 (AS431). We will search for hard X-rays and  time        
     variability that should be present if the companions are  compact obj       
     ects accreting from the Wolf-Rayet wind.                                    
                                                                                 
                                                                                 
                                                                                 
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