Journal
CLASSICAL AND QUANTUM GRAVITY
Volume 34, Issue 21, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1361-6382/aa8ab3
Keywords
force-free electrodynamics; FFE; general relativity; illinoisgrmhd; GRMHD; GRFFE; GiRaFFE
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Funding
- NASA Grant [13-ATP13-0077]
- NSF EPSCoR Grant [OIA-1458952]
- NSF EPSCoR Research Infrastructure Improvement [1003907]
- state of West Virginia (WVEPSCoR via the Higher Education Policy Commission)
- West Virginia University
- Office of Integrative Activities
- Office Of The Director [1458952] Funding Source: National Science Foundation
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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 (2006 Mon. Not. R. Astron. Soc. 367 1797) and modified by Paschalidis and Shapiro (2013 Phys. Rev. D 88 104031) to convert a GR magnetohydrodynamic (GRMHD) code into a GRFFE code. In short, GiRaFFE exists as a modification of IllinoisGRMHD (Etienne et al 2015 Class. Quantum Grav. 32 175009), a user-friendly, open-source, dynamical-spacetime GRMHD code. Both GiRaFFE and IllinoisGRMHD leverage the Einstein toolkit's highlyscalable 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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