Work

The role of particle feedback on particle acceleration in magnetic reconnection

Year: 2026

Type: article

Abstract: Magnetic reconnection is a ubiquitous process in astrophysical plasmas and an efficient mechanism for particle acceleration. Using 2.5D magnetohydrodynamic simulations with a co-evolving fluid-particle framework, we investigate how particle feedback affects reconnection and acceleration. Our simulations demonstrate that particle feedback to the fluid amplifies shear flows within magnetic islands, which strengthens the convective electric field and thereby boosts particle acceleration. This mechanism results in a higher maximum particle energy and a harder nonthermal energy spectrum. The guide field suppresses both the increase in gas internal energy and particle acceleration. These findings highlight the complex interplay between feedback, guide fields, and reconnection dynamics.

Source: Physics of Plasmas

DOI: 10.1063/5.0294865

Authors: Shi Min Liang, Nian Yu Yi

Institution: Xiangtan University

Language: English

Topic: Solar and Space Plasma Dynamics

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Natural Science Foundation of China, Hunan Provincial Science and Technology Department, Xiangtan University

Awards: G2140074421, G4534188866, G4762970773