具有0.1倍率的磁重联：广义麦克斯韦磁流体动力学中的有效电导率
高能天体物理现象
2026-01-07 v1 等离子体物理
摘要
Relativistic magnetic reconnection is thought to power various multi-wavelength emission signatures from neutron stars and black holes. Relativistic resistive magnetohydrodynamics (RRMHD) offers the simplest model of reconnection. However, a small uniform resistivity underestimates the reconnection rate compared to first-principles kinetic models. By employing an effective resistivity based on kinetic models - which connects the reconnection electric field to the charge-starved current density - we show that RRMHD can reproduce the increased reconnection rate of kinetic models, both in local current sheets and in global black hole magnetospheres.
引用
@article{arxiv.2601.02460,
title = {Magnetic reconnection with a 0.1 rate: Effective resistivity in general relativistic magnetohydrodynamics},
author = {B. Ripperda and M. P. Grehan and A. Moran and S. Selvi and L. Sironi and A. Philippov and A. Bransgrove and O. Porth},
journal= {arXiv preprint arXiv:2601.02460},
year = {2026}
}
备注
submitted to journal