GYOTO: a new general relativistic ray-tracing code

Details GYOTO: a new general relativistic ray-tracing code GYOTO: a new general relativistic ray-tracing code

2011-09-22

arxiv.org/abs/1109.4769v1

Classical and Quantum Gravity 28, 225011 (2011)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, 11 figures

Scientific paper

10.1088/0264-9381/28/22/225011

GYOTO, a general relativistic ray-tracing code, is presented. It aims at computing images of astronomical bodies in the vicinity of compact objects, as well as trajectories of massive bodies in relativistic environments. This code is capable of integrating the null and timelike geodesic equations not only in the Kerr metric, but also in any metric computed numerically within the 3+1 formalism of general relativity. Simulated images and spectra have been computed for a variety of astronomical targets, such as a moving star or a toroidal accretion structure. The underlying code is open source and freely available. It is user-friendly, quickly handled and very modular so that extensions are easy to integrate. Custom analytical metrics and astronomical targets can be implemented in C++ plug-in extensions independent from the main code.

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