iharm3D: Vectorized General Relativistic Magnetohydrodynamics

2021/10/14 by Cora Prather, George N. Wong, Vedant Dhruv +4 · 47 citations
Physics and Astronomy · #Accretion (finance) #Accretion disc #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Cartesian coordinate system #Code (set theory) #Ideal (ethics) #Magnetohydrodynamics #Polygon mesh #Pulsars and Gravitational Waves Research #Source code

paper · pdf · doi:10.21105/joss.03336

published in The Journal of Open Source Software 6(66), 3336 (Open Journals)

openalex publication_date 2021/10/14 · openalex created_date 2021/10/25 · openalex updated_date 2026/08/06

Abstract

Iharm3D is an open-source C code for simulating black hole accretion systems in arbitrary stationary spacetimes using ideal general-relativistic magnetohydrodynamics (GRMHD). It is an implementation of the HARM ("High Accuracy Relativistic Magnetohydrodynamics") algorithm outlined in Gammie et al. (2003) with updates as outlined in McKinney & Gammie (2004) and Noble et al. (2006). The code is most directly derived from Ryan et al. (2015) but with radiative transfer portions removed. HARM is a conservative finite-volume scheme for solving the equations of ideal GRMHD, a hyperbolic system of partial differential equations, on a logically Cartesian mesh in arbitrary coordinates.

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