Solar eruptive activities could occur in weak magnetic field environments and over large spatial scales, especially relevant to eruptions involving intermediate or quiescent solar filaments. To handle the large scales, we implement and apply a flux rope embedding method using regularized Biot-Savart laws in the spherical coordinate system. Combined with a potential field source surface model and a magneto-frictional method, a nonlinear force-free field comprising a flux rope embedded in a potential field is constructed. Using the combined nonlinear force-free field as the initial condition, we then perform a zero-β data-constrained magnetohydrodynamic (MHD) simulation for an M8.7 flare at 03:38 UT on 2012 January 23. The MHD model reproduces the eruption process, flare ribbon evolution (represented by the quasi-separatrix layer evolution) and kinematics of the flux rope. This approach could potentially model global-scale eruptions from weak field regions.
@article{arxiv.2309.01325,
title = {Data-constrained Magnetohydrodynamic Simulation of an Intermediate Solar Filament Eruption},
author = {Yang Guo and Jinhan Guo and Yiwei Ni and M. D. Ding and P. F. Chen and Chun Xia and Rony Keppens and Kai E. Yang},
journal= {arXiv preprint arXiv:2309.01325},
year = {2023}
}
Comments
23 pages, 7 figures, accepted for publicaiton in ApJ