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GYOTO 2.0: a polarized relativistic ray-tracing code

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arxiv 2311.18802 v1 pith:LTTLT4GS submitted 2023-11-30 astro-ph.HE astro-ph.IM

GYOTO 2.0: a polarized relativistic ray-tracing code

N. Aimar , T. Paumard , F. H. Vincent , E. Gourgoulhon , G. Perrin This is my paper
classification astro-ph.HE astro-ph.IM
keywords codepolarizedarticlecompactgyotoobjectsray-tracingrelativistic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Polarized general-relativistic radiative transfer in the vicinity of black holes and other compact objects has become a crucial tool for probing the properties of relativistic astrophysics plasmas. Instruments like GRAVITY, the Event Horizon telescope, ALMA, or IXPE make it very timely to develop such numerical frameworks. In this article, we present the polarized extension of the public ray-tracing code Gyoto, and offer a python notebook allowing to easily perform a first realistic computation. The code is very modular and allows to conveniently add extensions for the specific needs of the user. It is agnostic about the spacetime and can be used for arbitrary compact objects. We demonstrate the validity of the code by providing tests, and show in particular a perfect agreement with the ipole code. Our article also aims at pedagogically introducing all the relevant formalism in a self-contained manner.

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Cited by 3 Pith papers

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