GiRaFFE：一个开源的广义相对论无力电动力学程序
GiRaFFE: An Open-Source General Relativistic Force-Free Electrodynamics Code
摘要：
我们提出了GiRaFFE，这是第一个开源广义相对论无力电动力学（GRFFE）代码，用于动态、数值相对论生成的时空。GiRaFFE采用由McKinney开创并由Paschaldom和Shapiro修改的策略，将GR磁流体动力学（GRMHD）代码转换为GRFFE代码。简而言之，GiRaFFE是伊利诺伊州GRMHD的修改版，这是一种用户友好的开源动态时空GRMHD代码。GiRaFFE和IllinoisGRMHD都利用爱因斯坦工具包的高度可扩展的基础设施，在自适应网格细化（AMR）网格上对强动态时空中的磁化等离子体进行大规模模拟。我们证明，GiRaFFE通过了一个大的套件的平坦和弯曲的时空代码测试通过了一些其他国家的最先进的GRFFE代码，因此准备生产规模的GRFFE现象的相对论天体物理学的关键利益的模拟。
英文摘要：
We present GiRaFFE, the first open-source general relativistic force-free electrodynamics (GRFFE) code for dynamical, numerical-relativity generated spacetimes. GiRaFFE adopts the strategy pioneered by McKinney and modified by Paschalidis and Shapiro to convert a GR magnetohydrodynamic (GRMHD) code into a GRFFE code. In short, GiRaFFE exists as a modification of IllinoisGRMHD, a user-friendly, open-source, dynamical-spacetime GRMHD code. Both GiRaFFE and IllinoisGRMHD leverage the Einstein Toolkit's highly-scalable infrastructure to make possible large-scale simulations of magnetized plasmas in strong, dynamical spacetimes on adaptive-mesh refinement (AMR) grids. We demonstrate that GiRaFFE passes a large suite of both flat and curved-spacetime code tests passed by a number of other state-of-the-art GRFFE codes, and is thus ready for production-scale simulations of GRFFE phenomena of key interest to relativistic astrophysics.
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