Two-sided-loop jets associated with magnetic reconnection between emerging loops and twisted filament threads

TL;DR

This paper reports the first detailed observation of two-sided-loop jets linked with magnetic reconnection between emerging coronal loops and twisted filament threads across multiple solar atmospheric layers.

Contribution

It provides the first comprehensive observational evidence of two-sided-loop jets involving ejected plasmoids and twisted magnetic fields, expanding understanding of solar jet phenomena.

Findings

Observation of two-sided-loop jets in multiple layers of the solar atmosphere.

Identification of magnetic reconnection between emerging loops and filament threads.

Detection of plasmoid ejection and untwisting filament dynamics.

Abstract

Coronal jets are always produced by magnetic reconnection between emerging flux and pre-existing overlying magnetic fields. When the overlying field is vertical/obilique or horizontal, the coronal jet will appear as anemone type or two-sided-loop type. Most of observational jets are of the anemone type, and only a few of two-sided-loop jets have been reported. Using the high-quality data from New Vacuum Solar Telescope, Interface Region Imaging Spectrograph, and Solar Dynamics Observatory, we present an example of two-sided-loop jets simultaneously observed in the chromosphere, transition region, and corona. The continuous emergence of magnetic flux brought in successively emerging of coronal loops and the slowly rising of an overlying horizontal filament threads. Sequentially, there appeared the deformation of the loops, the plasmoids ejection from the loop top, and pairs of loop brightenings and jet moving along the untwisting filament threads. All the observational results indicate there exist magnetic reconnection between the emerging loops and overlying horizontal filament threads, and it is the first example of two-sided-loop jets associated with ejected plasmoids and twisted overlying fields.