  From the observation of a millisecond pulsar in SN 1987A, the following
implications are obtained. 1) The pulsar spindown in SN 1987A is caused by
radiating gravitational waves rather than by magnetic dipole radiation and/or
relativistic pulsar winds. 2) A mildly deformed shock wave would be formed at
the core-collapse and explosion in SN 1987A, which is consistent with the
conclusion given in Nagataki (2000). 3) The gravitational waves from the pulsar
should be detected in several years using a Fabry-Perot-Michelson
interferometer as the gravitational detector, such as LIGO and TAMA. 4) The
neutrino oscillation model is not a promising model for the explanation of the
kick velocity of the pulsar in SN 1987A. The hydrodynamical instability model
is more favored.
