We present here the results of a 515 day search for short bursts of gravitational waves by the IGEC2 observatory. This network included 4 cryogenic resonant-bar detectors: AURIGA, EXPLORER, and NAUTILUS in Europe, and ALLEGRO in America. These results cover the time period from November 6th 2005 until April 15th 2007, partly overlapping the first long term observations by the LIGO interferometric detectors. The observatory operated with high duty cycle, namely, 57% for fourfold coincident observations, and 94% for threefold observations. The sensitivity was the best ever obtained by a bar network: we could detect, with an efficiency >50%, impulsive events with a burst strain amplitude hrss & 1 10␣19 Hz␣1=2. The network data analysis was based on time coincidence searches over at least three detectors, used a blind search technique, and was tuned to achieve a false alarm rate of 1=century. When the blinding was removed, no gravitational wave candidate was found.

Astone, P., Baggio, L., Bassan, M., Bignotto, M., Bonaldi, M., Bonifazi, P., et al. (2010). IGEC2: A 17-month search for gravitational wave bursts in 2005–2007. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(2), 022003-1-022003-9 [10.1103/PhysRevD.82.022003].

IGEC2: A 17-month search for gravitational wave bursts in 2005–2007

BASSAN, MASSIMO;COCCIA, EUGENIO;FAFONE, VIVIANA;MOLETI, ARTURO;PIZZELLA, GUIDO;
2010-07-15

Abstract

We present here the results of a 515 day search for short bursts of gravitational waves by the IGEC2 observatory. This network included 4 cryogenic resonant-bar detectors: AURIGA, EXPLORER, and NAUTILUS in Europe, and ALLEGRO in America. These results cover the time period from November 6th 2005 until April 15th 2007, partly overlapping the first long term observations by the LIGO interferometric detectors. The observatory operated with high duty cycle, namely, 57% for fourfold coincident observations, and 94% for threefold observations. The sensitivity was the best ever obtained by a bar network: we could detect, with an efficiency >50%, impulsive events with a burst strain amplitude hrss & 1 10␣19 Hz␣1=2. The network data analysis was based on time coincidence searches over at least three detectors, used a blind search technique, and was tuned to achieve a false alarm rate of 1=century. When the blinding was removed, no gravitational wave candidate was found.
15-lug-2010
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/01 - FISICA SPERIMENTALE
English
Con Impact Factor ISI
Onde Gravitazionali, rivelatori, coincidenze, fondo
http://prd.aps.org/abstract/PRD/v82/i2/e022003
Astone, P., Baggio, L., Bassan, M., Bignotto, M., Bonaldi, M., Bonifazi, P., et al. (2010). IGEC2: A 17-month search for gravitational wave bursts in 2005–2007. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(2), 022003-1-022003-9 [10.1103/PhysRevD.82.022003].
Astone, P; Baggio, L; Bassan, M; Bignotto, M; Bonaldi, M; Bonifazi, P; Cavallari, G; Cerdonio, M; Coccia, E; Conti, L; D’Antonio, S; Di Paolo Emilio, M; Drago, M; Fafone, V; Falferi, P; Foffa, S; Fortini, P; Frasca, P; Giordano, G; Hamilton, Wo; Hanson, J; Johnson, Ww; Liguori, N; Longo, S; Maggiore, M; Marin, F; Marini, A; Mchugh, Mp; Mezzena, R; Miller, P; Minenkov, Y; Mion, A; Modestino, G; Moleti, A; Nettles, D; Ortolan, A; Pallottino, Gv; Pizzella, G; Poggi, S; Prodi, Ga; Re, V; Rocchi, A; Ronga, F; Salemi, F; Sturani, R; Taffarello, L; Terenzi, R; Vedovato, G; Vinante, A; Visco, M; Vitale, S; Weaver, J; Zendri, Jp; Zhang, P
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/16756
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