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   51007
   We propose to observe the unidentified EGRET source 2EG J1825-1307 and
   its nearby young pulsar PSR B1823-13 to test the hypothesis that the
   galactic population of the EGRET sources is associated with young
   radio-quiet pulsars. The object is an ideal target to be examined by
   ASCA, because of its highly significant GeV gamma-ray flux and the
   small error circle among the EGRET sources. The nearby pulsar PSR
   B1823-13 is a young active pulsar, but has been very poorly studied in
   X-rays despite of its important position in the pulsar population. We
   search for evidence of pulsar activity, such as X-ray pulse, neutron
   star surface emission, and synchrotron nebula. The X-ray spectra and
   geometry of the sources will clarify the nature of 2EG J1825-1307 and
   its association with PSR B1823-13.
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