Results of the IGEC-2 search for gravitational wave bursts during 2005

Journal Article · Thu Nov 15 00:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.102001· OSTI ID:21027786

Astone, P ^[1]; Babusci, D; Giordano, G; Marini, A; Modestino, G; Quintieri, L; Ronga, F ^[2]; Baggio, L ^[3]; Bassan, M; Fafone, V; Moleti, A ^[4]; Bignotto, M; Cerdonio, M; Conti, L; Drago, M; Liguori, N ^[5]; Bonaldi, M; Falferi, P; Vinante, A ^[6]; Camarda, M ^[7]

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1. INFN, Sezione di Roma, Piazzale le A. Moro 2, I-00185, Rome (Italy)
2. INFN, Laboratori Nazionali di Frascati, Via E. Fermi 40, I-00044, Frascati (Italy)
3. EGO, 56021 Santo Stefano a Macerata, Cascina, Pisa (Italy)
4. Dipartimento di Fisica, Universita di Roma 'Tor Vergata', Via Ricerca Scientifica 1, I-00133 Rome (Italy)
5. Dipartimento di Fisica, Universita di Padova, Via Marzolo 8, 35131 Padova (Italy)
6. Istituto di Fotonica e Nanotecnologie, CNR-Fondazione Bruno Kessler, I-38050 Povo, Trento (Italy)
7. Dipartimento di Ingegneria Informatica, Universita di Padova, Via G. Gradenigo 6a, 35131 Padova (Italy)

The network of resonant bar detectors of gravitational waves resumed coordinated observations within the International Gravitational Event Collaboration (IGEC-2). Four detectors are taking part in this Collaboration: ALLEGRO, AURIGA, EXPLORER and NAUTILUS. We present here the results of the search for gravitational wave bursts over 6 months during 2005, when IGEC-2 was the only gravitational wave observatory in operation. The implemented network data analysis is based on a time coincidence search among AURIGA, EXPLORER and NAUTILUS; ALLEGRO data was reserved for follow-up studies. The network amplitude sensitivity to bursts improved by a factor {approx_equal}3 over the 1997-2000 IGEC observations; the wider sensitive band also allowed the analysis to be tuned over a larger class of waveforms. Given the higher single-detector duty factors, the analysis was based on threefold coincidence, to ensure the identification of any single candidate of gravitational waves with high statistical confidence. The false detection rate was as low as 1 per century. No candidates were found.

• OSTI ID: 21027786
• Journal Information: Physical Review. D, Particles Fields, Vol. 76, Issue 10; Other Information: DOI: 10.1103/PhysRevD.76.102001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
COSMOLOGY
DATA ANALYSIS
DETECTION
GRAVITATIONAL WAVE DETECTORS
GRAVITATIONAL WAVES
OPERATION
SENSITIVITY
WAVE FORMS