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Uncertain continuation of fast growth in the lowest-uniform-resistivity run (s10eC5r1) after simulation crash

Determine the subsequent time evolution and possible saturation of the faster growth observed around t ≃ 4 L0/c in the constant-uniform-resistivity ResRMHD model s10eC5r1 (η = 2.5×10^-5), which crashed prematurely, and ascertain to what extent this faster growth would persist over time relative to higher-resistivity cases.

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Background

In Section 3.3 the authors compare effective-resistivity ResRMHD runs with uniform-resistivity runs. The lowest-uniform-resistivity case (s10eC5r1, η = 2.5×10-5) begins to show faster growth consistent with the onset of ideal tearing, unlike higher-η runs. However, this particular run crashed due to the low resistivity, preventing assessment of the long-term behavior.

Because the crash halted the simulation, it is explicitly uncertain whether the observed faster growth would continue and how it would compare over time to higher-resistivity cases. Resolving this would clarify the regime transition near the ideal tearing threshold for uniform η in these setups.

References

Only the simulation with the lowest constant resistivity, i.e. s10eC5r1, shows a beginning of faster growth around t ≃ 4L0/c on time scales compatible with the onset of the ideal tearing mode (i.e. ≃ 1.66τA), therefore still slower than the effective resistivity cases. This simulation unfortunately crashed due to the low value of resistivity imposed, therefore it remains unclear to what extent such growth would continue over time.

Relativistic reconnection with effective resistivity: I. Dynamics and reconnection rate (2410.20924 - Bugli et al., 28 Oct 2024) in Section 3.3, pp. 9–10