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   71057
   RX J1838.4-0301 is a point source in the supernova remnant (SNR)
   G28.8+1.5. A 5.45-s pulsation was found from the ROSAT observation and
   similarity of this system to the anomalous 6-s pulsar 1E2259+586/G109-
   1.0 system is proposed. However, there is an argumenet on the 6-s
   pulsar hypotesis of this pulsar. On the other hand, a hypotesis of a
   magnetar was proposed for the 1E 1841-045 /Kes 73 system which has
   properties similar to the above mentioned two systems. We propose ASCA
   observations of the RX J1838.4-0301/G28.8+1.5 system to confirm the
   5.45-s pulsations of the source, to investigate the possibility of this
   source to be a magnetar, and to study the association of this source
   with the SNR.
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