Forecasting the Detection Capabilities of Third-generation Gravitational-wave Detectors Using GWFAST

We introduce GWFAST , a novel Fisher-matrix code for gravitational-wave studies, tuned toward third-generation gravitational-wave detectors such as Einstein Telescope (ET) and Cosmic Explorer (CE). We use it to perform a comprehensive study of the capabilities of ET alone, and of a network made by E...

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Bibliographic Details
Published in:The Astrophysical journal 2022-12, Vol.941 (2), p.208
Main Authors: Iacovelli, Francesco, Mancarella, Michele, Foffa, Stefano, Maggiore, Michele
Format: Article
Language:English
Subjects:
Accuracy
Astrophysics
Binary stars
Black holes
Companion stars
Detectors
Distance measurement
Fisher’s Information
Gravitational wave astronomy
Gravitational wave detectors
Gravitational wave sources
Gravitational waves
Localization
Matrix codes
Neutron stars
Neutrons
Red shift
Sensors
Signal to noise ratio
Waveforms
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Summary:We introduce GWFAST , a novel Fisher-matrix code for gravitational-wave studies, tuned toward third-generation gravitational-wave detectors such as Einstein Telescope (ET) and Cosmic Explorer (CE). We use it to perform a comprehensive study of the capabilities of ET alone, and of a network made by ET and two CE detectors, as well as to provide forecasts for the forthcoming O4 run of the LIGO-Virgo-KAGRA (LVK) collaboration. We consider binary neutron stars, binary black holes, and neutron star–black hole binaries, and compute basic metrics such as the distribution of signal-to-noise ratio (S/N), the accuracy in the reconstruction of various parameters (including distance, sky localization, masses, spins, and, for neutron stars, tidal deformabilities), and the redshift distribution of the detections for different thresholds in S/N and different levels of accuracy in localization and distance measurement. We examine the expected distribution and properties of golden events , with especially large values of the S/N. We also pay special attention to the dependence of the results on astrophysical uncertainties and on various technical details (such as choice of waveforms, or the threshold in S/N), and we compare with other Fisher codes in the literature. In the companion paper Iacovelli et al., we discuss the technical aspects of the code. Together with this paper, we publicly release the code GWFAST , ( https://github.com/CosmoStatGW/gwfast ) and the library WF4Py ( https://github.com/CosmoStatGW/WF4Py ) implementing state-of-the-art gravitational-wave waveforms in pure Python .
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/ac9cd4