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arXiv · gr-qc/9802018

Viscoelastic effects in a spherical Gravitational Wave antenna

J. A. Lobo·J. A. Ortega
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Abstract

Internal friction effects are responsible for line widening of the resonance frequencies in spherical gravitational wave detectors, and result in exponentially damped oscillations of its eigenmodes with a decay time which is proportional to the quality factor of the mode and to its inverse frequency. We study the solutions to the equations of motion for a viscoelastic spherical GW detector based on various different assumptions about the material's constituent equations. Quality factor dependence on mode frequency is determined in each case, and a discussion of its applicability to actual detectors is made.

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J. A. Lobo, J. A. Ortega. 1998-02-09. Viscoelastic effects in a spherical Gravitational Wave antenna. https://arxiv.org/abs/gr-qc/9802018

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