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arXiv 1109.4769gr-qcastro-ph.HE
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GYOTO:一个新的广义相对论射线追踪程序

GYOTO: a new general relativistic ray-tracing code

Frederic H. Vincent, Thibaut Paumard, Eric Gourgoulhon, Guy Perrin

摘要:

介绍了一个广义相对论射线追踪程序GYOTO。它的目的是计算致密物体附近的天体图像,以及相对论环境中大质量物体的轨迹。该程序不仅能对Kerr度规中的零测地线方程和类时测地线方程进行积分,而且能对广义相对论的3+1形式下的任何度规进行数值计算。模拟图像和光谱已经计算了各种天文目标,如移动的恒星或环形吸积结构。底层代码是开源的,可以免费获得。它是用户友好的,快速处理和非常模块化,使扩展很容易集成。自定义分析指标和天文目标可以在C++插件扩展中实现,独立于主代码。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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