What can we learn about GW Physics with an elastic spherical antenna?

A general formalism is set up to analyse the response of an arbitrary solid elastic body to an arbitrary metric Gravitational Wave perturbation, which fully displays the details of the interaction antenna-wave. The formalism is applied to the spherical detector, whose sensitivity parameters are ther...

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Published in:arXiv.org 2000-06
Main Author: Lobo, J Alberto
Format: Article
Language:English
Subjects:
Absorption cross sections
Elastic bodies
Formalism
Gravitation theory
Gravitational fields
Gravitational waves
Parameter sensitivity
Spherical antennas
Transfer functions
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description A general formalism is set up to analyse the response of an arbitrary solid elastic body to an arbitrary metric Gravitational Wave perturbation, which fully displays the details of the interaction antenna-wave. The formalism is applied to the spherical detector, whose sensitivity parameters are thereby scrutinised. A multimode transfer function is defined to study the amplitude sensitivity, and absorption cross sections are calculated for a general metric theory of GW physics. Their scaling properties are shown to be independent of the underlying theory, with interesting consequences for future detector design. The GW incidence direction deconvolution problem is also discussed, always within the context of a general metric theory of the gravitational field.
doi_str_mv 10.48550/arxiv.0006102
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subjects Absorption cross sections
Elastic bodies
Formalism
Gravitation theory
Gravitational fields
Gravitational waves
Parameter sensitivity
Spherical antennas
Transfer functions
title What can we learn about GW Physics with an elastic spherical antenna?
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