Abstract
We report on the operation of the resonant gravitational wave (g.w.) detector Explorer of the Rome group (M = 2300 kg, T =2 :6 K, located at CERN) at the time of the gamma-ray burst GRB 980425 (April 25.90915 UT, 1998), which is probably associated with the supernova SN 1998bw .W e present the data of the detec- tor (with sensitivity hc =8 10 19 for a1m s pulse), and use the BeppoSAX data to estimate the initial time of the GRB: a basic parameter for any correlation analysis. The g.w. data exhibit no signicant time signature around the GRB 980425. We wish to remark the impor- tance to make use, in spite of the present low sensitiv- ity, of the data collected with g.w. detectors, that can be regarded as active observatories, in coincidence with the BeppoSAX data.
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