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   PR # 21014
    The LMC pulsar PSR 0540-69 is a young (about 1000 yr) Crab like super
    nova remnant containing a rapidly rotating (P = 50 msec)neutron star.
    As the radio signal is weak, only optical and X-ray measurements are 
    available for timing analysis. The long continual observations have  
    been performed with Ginga and a breaking index of n = 2.02 was obtain
    ed using data spanned over one and a half years (Nagase et al 1990). 
    We propose to observe the pulsar steadily with ASCA to investigate   
    spin discontinuity (glitches) and stability of the breaking index    
    during long time span. Such data of stational monitoring will also   
    provide opportunity to determine an accurate pulsar position which   
    may be able to compare recent high resolution optical image (Caraveo 
   et al 1992).                  
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