The TIGA technique for detecting gravitational waves with a spherical antenna

Details The TIGA technique for detecting gravitational waves with a spherical antenna The TIGA technique for detecting gravitational waves with a spherical antenna

1997-06-19

arxiv.org/abs/gr-qc/9706062v1

Phys.Rev.D56:7513-7528,1997

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 14 figures, submitted to Physical Review D

Scientific paper

10.1103/PhysRevD.56.7513

We report the results of a theoretical and experimental study of a spherical gravitational wave antenna. We show that it is possible to understand the data from a spherical antenna with 6 radial resonant transducers attached to the surface in the truncated icosahedral arrangement. We find that the errors associated with small deviations from the ideal case are small compared to other sources of error, such as a finite signal-to-noise ratio. An in situ measurement technique is developed along with a general algorithm that describes a procedure for determining the direction of an external force acting on the antenna, including the force from a gravitational wave, using a combination of the transducer responses. The practicality of these techniques was verified on a room-temperature prototype antenna.

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