Ray-tracing and polarized radiative transfer in General Relativity

TL;DR

This paper introduces a new numerical approach for polarized radiative transfer in general relativity, presenting equations and a ray-tracing code to solve complex problems involving arbitrary space-time metrics.

Contribution

The authors develop a set of equations and a novel ray-tracing code, Arcmancer, enabling numerical solutions for polarized radiative transfer in any space-time metric.

Findings

Successfully implemented the new ray-tracing code Arcmancer

Demonstrated numerical solutions for example problems

Validated the approach for arbitrary space-time metrics

Abstract

We discuss the problem of polarized radiative transfer in general relativity. We present a set of equations suitable for solving the problem numerically for the case of an arbitrary space-time metric, and show numerical solutions to example problems. The solutions are computed with a new ray-tracing code, Arcmancer, developed by the authors.