Search for gravitational radiation from the Crab pulsar

The result of a search for the gravitational radiation from the Crab pulsar, at 60.2 Hz, is presented. A 400-kg aluminum quadrupole antenna, $Q=4500\mathrm{}$, is thermally tuned tracking the pulsar frequency. Correlating the 420 h of recorded antenna output with the timing of the optical pulses, we have obtained an upper limit for the energy flux of the gravitational radiation: $S<\mathrm{}14\mathrm{}$ ${\mathrm{W}/\mathrm{m}}^2$.