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Title
[Prof. In-Jee Jeong, School of Mathematics] Establishes existence and structure of Magnetohydrostatic(MHS) equilibria via vanishing resistivity limit of magnetic relaxation equations
Date
2026-04-09

This work mathematically characterizes the existence and properties of Magnetohydrostatic (MHS) equilibrium states via the vanishing resistivity limit of resistive magnetic relaxation equations subject to stochastic forcing. The "magnetic relaxation process" proposed by H. K. Moffatt is a physical mechanism to reach an equilibrium state by minimizing energy while preserving the topological constraints of the magnetic field; this study provides a rigorous proof that MHS equilibrium states with complex magnetic field structures can be derived through this process. The findings of this paper can be applied to the analysis of various physical scenarios modeled by MHS equilibrium, such as the study of solar flares and plasma control theory for nuclear fusion.

▶ In the two-dimensional case, the vanishing resistivity limit of resistive magnetic relaxation equations subject to stochastic forcing avoids finite Fourier modes equilibria (depicted in the figures) with probability equal to one. The corresponding problem in the three-dimensional case remains open.

 

Journal

ANNALS OF PDE

Publication Date

12 January, 2026

Article

MHS Equilibria in the Non-Resistive Limit to the Randomly Forced Resistive Magnetic Relaxation Equations

Authors

Abe, Ken; Jeong, In-Jee; Pasqualotto, Federico; Sato, Naoki

DOI

https://doi.org/10.48550/arXiv.2506.08394

Link

https://link.springer.com/article/10.1007/s40818-025-00231-1