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Increasing the bandwidth of resonant gravitational antennas: the case of explorer.

Astone, P; Babusci, D; Bassan, M; Carelli, P; Cavallari, G; Coccia, E; Cosmelli, C; D'Antonio, S; Fafone, V; Fauth, A C; Federici, G; Giordano, G; Marini, A; Minenkov, Y; Modena, I; Modestino, G; Moleti, A; Pallottino, G V; Pizzella, G; Quintieri, L; Rocchi, A; Ronga, F; Terenzi, R; Torrioli, G; Visco, M.

Phys Rev Lett ; 91(11): 111101, 2003 Sep 12.

Article in English | MEDLINE | ID: mdl-14525411

ABSTRACT

Resonant gravitational wave detectors with an observation bandwidth of tens of hertz are a reality: the antenna Explorer, operated at CERN by the ROG Collaboration, has been upgraded with a new readout. In this new configuration, it exhibits an unprecedented useful bandwidth: in over 55 Hz about its center operating frequency of 919 Hz the spectral sensitivity is better than 10(-20) Hz(-1/2). We describe the detector and its sensitivity and discuss the foreseeable upgrades to even larger bandwidths.

Cosmic rays observed by the resonant gravitational wave detector NAUTILUS

Astone P; Bassan M; Bonifazi P; Carelli P; Coccia E; Fafone V; D'Antonio S; Frasca S; Marini A; Mauceli E; Mazzitelli G; Minenkov Y; Modena I; Modestino G; Moleti A; Pallottino GV; Papa MA; Pizzella G; Ronga F; Terenzi R; Visco M; Votano L.

Phys Rev Lett ; 84(1): 14-7, 2000 Jan 03.

Article in English | MEDLINE | ID: mdl-11015823

ABSTRACT

The passage of cosmic rays has been observed to excite mechanical vibrations in the resonant gravitational wave detector NAUTILUS operating at temperature of 100 mK. A very significant correlation (more than 10 standard deviations) is found.

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