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arXiv · 2609.29247

GIMLI: a toolkit connecting linear and non-linear magnetohydrodynamic regimes

Jordi De Jonghe·Nicolas Brughmans·Rony Keppens
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Abstract

In this work, we present the General Interface for MPI-AMRVAC / Legolas Interconnection (or GIMLI, for short) as a toolkit for in-depth (magneto)hydrodynamic studies combining linear and non-linear methods. Acting as a bridge between the linear (M)HD spectroscopy code Legolas and the non-linear simulation code MPI-AMRVAC, GIMLI facilitates the initialization of non-linear MPI-AMRVAC simulations with linear solutions. We showcase this functionality on both Cartesian and cylindrical setups, covering representative plasma physical and astrophysical scenarios: Parker unstable magnetized atmospheres, interchange modes in a straight tokamak setup, resistive Harris sheet evolutions and thermally modified discrete Alfvén waves in coronal loops. We offer suggestions on how to combine linear and non-linear methods, and demonstrate how to leverage GIMLI in the process.

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Jordi De Jonghe, Nicolas Brughmans, Rony Keppens. 2026-09-24. GIMLI: a toolkit connecting linear and non-linear magnetohydrodynamic regimes. https://arxiv.org/abs/2609.29247

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