Data obtained during five months of 2001 with the gravitational wave ( GW ) detectors EXPLORER and NAUTILUS were studied in correlation with the gamma ray burst data ( GRB ) obtained with the BeppoSAX satellite .
During this period BeppoSAX was the only GRB satellite in operation , while EXPLORER and NAUTILUS were the only GW detectors in operation .
No correlation between the GW data and the GRB bursts was found .
The analysis , performed over 47 GRB ’ s , excludes the presence of signals of amplitude h \geq 1.2 \times 10 ^ { -18 } , with 95 % probability , if we allow a time delay between GW bursts and GRB within \pm 400 s , and h \geq 6.5 \times 10 ^ { -19 } , if the time delay is within \pm 5 s. The result is also provided in form of scaled likelihood for unbiased interpretation and easier use for further analysis .