Recurrent Two-Sided Loop Jets Caused by Magnetic Reconnection between Erupting Minifilaments and Nearby Large Filament

TL;DR

This study presents detailed observations of recurrent two-sided loop jets caused by magnetic reconnection between erupting minifilaments and a large filament, revealing the role of magnetic flux cancelation in jet formation.

Contribution

It provides the first clear evidence linking minifilament eruptions and magnetic flux cancelation to the generation of recurrent two-sided loop jets.

Findings

Three similar two-sided loop jets observed with consistent origin.

Minifilament eruptions drive the jets and reformation occurs at the same neutral line.

Magnetic flux cancelation is linked to the eruption process.

Abstract

Using high spatial and temporal data from the New Vacuum Solar Telescope (NVST) and the Solar Dynamics Observatory (SDO), we present unambiguous observations of recurrent two-sided loop jets caused by magnetic reconnection between erupting minifilaments and nearby large filament. The observations demonstrate that three two-sided loop jets, which ejected along the large filament in opposite directions, had similar appearance and originated from the same region. We find that a minifilament erupted and drove the first jet. It reformed at the same neutral line later, and then underwent partial and total eruptions, drove the second and third jets, respectively. In the course of the jets, cool plasma was injected into the large filament. Furthermore, persistent magnetic flux cancelation occurred at the neutral line under the minifilament before its eruption and continued until the end of the observation. We infer that magnetic flux cancellation may account for building and then triggering the minifilament to erupt to produce the two-sided loop jets. This observation not only indicates that two-sided loop jets can be driven by minifilament eruptions, but also sheds new light on our understanding of the recurrent mechanism of two-sided loop jets.