Showing papers by "A. Masserot published in 2005"
TL;DR: In this article, an experimental upper limit of the mirror residual seismic noise at a few Hertz is provided, which is lower than the thermal noise floor, expected to limit the antenna sensitivity in the low frequency range.
90 citations
TL;DR: In this article, the authors present the Noise Analysis Package Library (NAP), a tool to perform noise studies and data conditioning on the data produced by the Virgo interferometer during the C5 engineering run.
Abstract: We present the noise analysis package library (NAP), a new tool to perform noise studies and data conditioning on the data produced by gravitational wave detectors. We describe its design and report the results of the application of parametric spectral estimation, whitening, line removal with adaptive notch filters and noise removal using a multicoherence procedure on the data taken by the Virgo interferometer during the C5 engineering run.
11 citations
TL;DR: In this article, the authors investigate the effect of seismic/acoustic noise coupling to the laser beam before the input mode cleaner, then propagating as beam power noise to the ITF dark fringe output signal.
Abstract: During the commissioning of the Virgo interferometer, a search for environmental noise contributions to the dark fringe signal was undertaken. Dedicated tests have been performed to identify major sources of disturbances and to understand the coupling mechanism with the interferometer. The major effect is due to seismic/acoustic noise coupling to the laser beam before the input mode cleaner, then propagating as beam power noise to the ITF dark fringe output signal. In this paper we illustrate the tests performed and preliminary results of our investigation.
6 citations
TL;DR: A new method for the detection of spectral lines in random noise that mimics the processing scheme of matching filtering, i.e., a whitening procedure combined with the measurement of the correlation between the data and a template is proposed.
Abstract: We propose a new method for the detection of spectral lines in random noise. It mimics the processing scheme of matching filtering, i.e., a whitening procedure combined with the measurement of the correlation between the data and a template. Thanks to the original noise spectrum estimate used in the whitening procedure, the algorithm can easily be tuned to various types of noise. It can thus be applied to the data taken from a wide class of sensors. This versatility and its small computational cost make this method particularly well suited for real-time monitoring in gravitational wave experiments. We show the results of its application to Virgo C4 commissioning data.
6 citations
TL;DR: Virgo as mentioned in this paper is a French-Italy collaboration for the construction and operation of a 3 km long interferometric gravitational wave antenna, which is already completed and the commissioning is quite advanced, while the data taking is expected to start in 2005.
Abstract: Virgo is a French–Italian collaboration for the construction and operation of a 3 km long interferometric gravitational wave antenna. The construction of the detector is already completed and the commissioning is quite advanced, while the data taking is expected to start in 2005. In this paper, we report on the present status of Virgo and on the results of commissioning activity. In particular, we analyse the first four engineering runs (C1–C4) and discuss the sensitivity obtained in C4.
6 citations
TL;DR: An investigation of Virgo Commissioning run 4 data is reported on, dedicated to searching signals of the kind supposed to be emitted by inspiral neutron star binary systems, using simulated events, hardware and software injected in the data.
Abstract: We report on an investigation of Virgo Commissioning run 4 data, dedicated to searching signals of the kind supposed to be emitted by inspiral neutron star binary systems. Given the still relatively limited sensitivity, the goal was to test some of the elements of the analysis chain, using simulated events, hardware and software injected in the data; the test allowed us to also characterize the detector stability during the run, for the purposes of the inspiral event search.
5 citations