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arXiv · 2107.06306

BiGONLight: light propagation with bi-local operators in Numerical Relativity

Michele Grasso·Eleonora Villa
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Abstract

BiGONLight, Bi-local Geodesic Operators framework for Numerical Light propagation, is a new tool for light propagation in Numerical Relativity. The package implements the Bi-local Geodesic Operators formalism, a new framework for light propagation in General Relativity. With BiGONLight it is possible to extract observables such as angular diameter distance, luminosity distance, magnification as well as new real-time observables like parallax and redshift drift within the same computation. As test-bed for our code we consider two cosmological models, the $\Lambda$CDM and the inhomogeneous Szekeres model, and a simulated dust universe. All our tests show an excellent agreement with known results.

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Michele Grasso, Eleonora Villa. 2021-07-13. BiGONLight: light propagation with bi-local operators in Numerical Relativity. https://doi.org/10.1088/1361-6382%2Fac35aa

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