Dual detectors of gravitational waves

Details Dual detectors of gravitational waves Dual detectors of gravitational waves

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5500..105b&link_type=abstract

Gravitational Wave and Particle Astrophysics Detectors. Edited by Hough, James; Sanders, Gary H. Proceedings of the SPIE, Volum

Astronomy and Astrophysics

Astrophysics

Scientific paper

In a "Dual" gravitational wave (GW) detector a wide band sensitivity is obtained by measuring the differential displacement, driven by the GW, of the facing surfaces of two nested massive bodies mechanically resonating at different frequencies. A "selective readout" scheme, capable of specifically selecting the signal contributed by the vibrational modes sensitive to the gravitational waves, could then reduce the thermal noise contribution from the not sensitive modes. In a dual detector the sensitivity improvement in the displacement transduction could be pursued by means of mechanical amplification systems. This solution is innovative for the resonant GW detectors and we report about preliminary theoretical and experimental study.

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