GiRaFFE: An Open-Source General Relativistic Force-Free Electrodynamics Code
arXiv:1704.00599 · doi:10.1088/1361-6382/aa8ab3
Abstract
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.
23 pages, 4 figures. Consistent with published version
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- Hybrid GRMHD and Force-Free Simulations of Black Hole Accretion
- Diffusivity in force-free simulations of global magnetospheres
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- Computational General Relativistic Force-Free Electrodynamics: I. Multi-Coordinate Implementation and Testing
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