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   PR # 41020
   We propose to observe a radio pulsar, J0108-1431, which is the
   nearest neutron star (NS) from the earth. The main purpose of the
   observation is to determine the temperature of the surface of the NS,
   and finally to examine the hypothesis of the magnetic field decay of
   the NSs. For this purpose, we deduce the true age of this NS
   observing the blackbody X-ray emission from its surface. The
   characteristic age, determined by the radio observation, is compared
   with the true age. If the magnetic field decays exponentially as
   short as 10**7 yr, the true age must be much younger than its
   characteristic age, resulting in the detection of the NS as a
   relatively bright soft X-ray source. If the NS is not detected, the
   upper limit of the temperature and the lower limit of the decay time
   are given.
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