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texttt{GWFAST}: a Fisher information matrix Python code for third-generation gravitational-wave detectors

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arxiv 2207.06910 v3 pith:XHI234LJ submitted 2022-07-06 astro-ph.IM astro-ph.COastro-ph.HEgr-qc

texttt{GWFAST}: a Fisher information matrix Python code for third-generation gravitational-wave detectors

classification astro-ph.IM astro-ph.COastro-ph.HEgr-qc
keywords textttgwfastgravitational-wavedetectorspythonallowscodecomputation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We introduce $\texttt{GWFAST}$, a Fisher information matrix $\texttt{Python}$ code that allows easy and efficient estimation of signal-to-noise ratios and parameter measurement errors for large catalogs of resolved sources observed by networks of gravitational-wave detectors. In particular, $\texttt{GWFAST}$ includes the effects of the Earth's motion during the evolution of the signal, supports parallel computation, and relies on automatic differentiation rather than on finite differences techniques, which allows the computation of derivatives with accuracy close to machine precision. We also release the library $\texttt{WF4Py}$ implementing state-of-the-art gravitational-wave waveforms in $\texttt{Python}$. In this paper we provide a documentation of $\texttt{GWFAST}$ and $\texttt{WF4Py}$ with practical examples and tests of performance and reliability. In a companion paper we present forecasts for the detection capabilities of the second and third generation of ground-based gravitational-wave detectors, obtained with $\texttt{GWFAST}$.

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