The 2003 run of the EXPLORER–NAUTILUS gravitational wave experiment

We report here the preliminary results of the search for gravitational wave bursts from the 2003 run of the EXPLORER–NAUTILUS experiment. The total common measuring time was 149 days. The detectors had a typical noise spectral amplitude of about 2 × 10−21 Hz−1/2, a bandwidth of the order of 10 Hz and a very good stability. We derive a new upper limit for the GW burst rate, of the order of 0.02 events/day for hRSS ⩾ 2 × 10−19, and discuss the implication of this result with respect to the results obtained with the 2001 run.

[1]  M. M. Casey,et al.  Upper limits on gravitational wave bursts in LIGO's second science run , 2005 .

[2]  G. Giordano,et al.  Considerations on coincidence experiments between two gravitational wave detectors for sources in the Galactic Centre , 2004 .

[3]  E. Coccia,et al.  Possible sources of gravitational wave bursts detectable today , 2004, gr-qc/0405047.

[4]  A. Weinstein.  First upper limits from LIGO on gravitational wave bursts , 2004 .

[5]  G. Paturel,et al.  Prediction of the Sidereal Time Distribution of Gravitational Wave Events for Different Detectors , 2003 .

[6]  Y. Minenkov,et al.  Increasing the bandwidth of resonant gravitational antennas: the case of explorer. , 2003, Physical review letters.

[7]  David Blair,et al.  Methods and results of the IGEC search for burst gravitational waves in the years 1997-2000 , 2003 .

[8]  P. Astone,et al.  Bayesian model comparison applied to the Explorer–Nautilus 2001 coincidence data , 2003, gr-qc/0304096.

[9]  G. Paturel,et al.  Sidereal time analysis as a tool for the study of the space distribution of sources of gravitational waves , 2002, astro-ph/0211604.

[10]  Y. Minenkov,et al.  Study of the coincidences between the gravitational wave detectors EXPLORER and NAUTILUS in 2001 , 2002, gr-qc/0210053.

[11]  Y. Minenkov,et al.  Effect of cosmic rays on the resonant gravitational wave detector Nautilus at temperature T=1.5 K , 2002, gr-qc/0206079.

[12]  G. Paturel,et al.  Statistics of the detection rates for tensor and scalar gravitational waves from the Local Galaxy universe , 2001, astro-ph/0104115.

[13]  Y. Minenkov,et al.  Study of coincidences between resonant gravitational wave detectors , 2000, gr-qc/0007055.

[14]  Ivanov,et al.  First search for gravitational wave bursts with a network of detectors , 2000, Physical review letters.

[15]  Carelli,et al.  Cosmic rays observed by the resonant gravitational wave detector NAUTILUS , 1999, Physical review letters.

[16]  E. Mauceli,et al.  Search for gravitational radiation with the Allegro and Explorer detectors , 1999 .