How to overcome limitations of analytic solutions when determining the direction of a gravitational wave using experimental data: an example with the schenberg detector

How to overcome limitations of analytic solutions when determining the direction of a gravitational wave using experimental data: an example with the schenberg detector

Author Costa, C. F. S. Google Scholar
Magalhaes, N. S. Autor UNIFESP Google Scholar
Abstract It has been commonly assumed that analytic solutions can efficiently provide the direction of a gravitational wave (GW) once sufficient data is available from gravitational wave detectors. Nevertheless, we identified that such analytic solutions (based on the GW matrix reconstruction) present unforeseen theoretical and practical limitations (indeterminacies) and that for certain incoming directions they are unable to recover the latter. We present here important indeterminacy cases as well as a mathematical procedure that reduces such indeterminacies. Also, we developed a method that requires the least computational power to retrieve GW directions and which can be applied to any system of detectors able to reconstruct the GW matrix. As a test for the method, we used simulated data of the spherical, resonant mass GW detector Schenberg, which involves five oscillating modes and six transducer readouts. The results show that this method canceled indeterminacies out satisfactorily.
Keywords Mario-Schenberg
Language English
Date 2016
Published in 11th Edoardo Amaldi Conference On Gravitational Waves (AMALDI 11). Bristol, v. 716, p. UNSP 012019, 2016.
ISSN 1742-6588 (Sherpa/Romeo, impact factor)
Publisher Hospital Clinicas, Univ Sao Paulo
Extent UNSP 012019
Origin http://dx.doi.org/10.1088/1742-6596/716/1/012019
Access rights Open access Open Access
Type Conference paper
Web of Science ID WOS:000386960500019
URI http://repositorio.unifesp.br/handle/11600/49353

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