A noise model for the Brazilian gravitational wave detector  Mario Schenberg 

Abstract

‘Mario Schenberg’ is a spherical resonant-mass gravitational wave (GW) detector that will be part of a GW detection array of three detectors. The other two will be built in Italy and in The Netherlands. Their resonant frequencies will be around 3.2 kHz with a bandwidth of about 200 Hz. This range of frequencies is new in a field where the typical frequencies lay below 1 kHz, making the development of the mechanical system much more complex. In this work, a noise model of the detector is presented, where all main sources of noise were taken into account. The final goal is to calculate the expected sensitivity of the detector, analysing which parameters must be changed to improve this.

Solution of the inverse problem in spherical gravitational wave detectors using a model with independent bars

“…The simulation of the detector is possible because its mathematical model is known as well as the mathematical models of its noise sources [21]. Table I shows the angles relative to the position of each transducer on the spherical detector.…”

On the sensitivity of a hollow sphere as a multi-modal resonant gravitational wave detector

“…We start with the case of a filled sphere, this case is easier to compare with existing computations [8] and can be used as a benchmark for the hollow sphere simulations. We also use this simple case in order to highlight the how the single transducer sensitivity is modified by the presence of other transducers.…”

Percepções Sobre Patrimônio Paleontológico E Educação Baseada No Local Em Geociências

“…Acerca dos autores: os dois autores são tem origem em engenharia mecânica e trabalham com a parte mecânica da detecção de ondas gravitacionais (BORTOLI, 2010, 2016 e 2019) (FRAJUCA, 2002(FRAJUCA, , 2004(FRAJUCA, , 2005(FRAJUCA, , 2006(FRAJUCA, , 2008 e 2018) mas sempre tiveram fascinação para com a paleontologia.…”