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   PR #   143
   4U1626-67 is a low-mass binary X-ray pulsar with a period of 7.7s,
   which showed a stable spin-up of a rate of ~2x10^{-4} /yr.This source
   is known to show a highly energy-dependent X-ray pulse profile; i.e.,
   highly phase-dependent X-ray spectra.Furthermore, Ginga discovered a
   QPO with a centroid frequency of 0.04Hz.The primary purpose of this
   observation is to study these interesting spectral properties with the
   energy resolution of ASCA, as well as to serve for calibration using
   the 7.7s pulsation.
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