From Formation to Disruption: Observing the Multiphase Evolution of a Solar Flare Current Sheet

TL;DR

This paper presents detailed observations of a solar flare current sheet's multiphase evolution, from formation to disruption, enhancing understanding of magnetic reconnection in solar eruptions.

Contribution

It provides the first detailed observational account of the entire multiphase evolution of a solar flare current sheet, from formation to disruption.

Findings

Observed the formation and disruption of a current sheet during a solar flare.

Identified the multiphase evolution stages of the current sheet.

Implications for understanding reconnection onset in solar eruptions.

Abstract

A current sheet, where magnetic energy is liberated through reconnection and is converted to other forms, is thought to play the central role in solar flares, the most intense explosions in the heliosphere. However, the evolution of a current sheet and its subsequent role in flare-related phenomena such as particle acceleration is poorly understood. Here we report observations obtained with NASA's Solar Dynamics Observatory that reveal a multiphase evolution of a current sheet in the early stages of a solar flare, from its formation to quasi-stable evolution and disruption. Our observations have implications for the understanding of the onset and evolution of reconnection in the early stages of eruptive solar flares.