Propagating Kink Waves in Chromospheric Jet-like Structures and Coronal Plumelets

TL;DR

This paper reports the first direct observation of a propagating kink wave in a chromospheric jet-like structure and its associated coronal plumelet, supported by 3D MHD simulations, highlighting wave energy transfer in the solar atmosphere.

Contribution

It provides the first direct observational evidence of kink waves propagating in chromospheric jets and coronal plumelets, supported by simulations demonstrating wave transmission along magnetic flux tubes.

Findings

Kink waves observed with ~95s and ~99s periods in chromospheric and coronal structures.

Simulations reproduce upward propagation of kink waves in magnetic flux tubes.

Transverse waves potentially transfer energy from the chromosphere to the corona.

Abstract

Coronal plumes and chromospheric jet-like structures are believed to be highly dynamic. We report the first direct observations of a propagating kink wave in a chromospheric jet-like structure and its associated plumelet structure in the upper corona of the solar polar region, using data from the High Resolution Imager (HRI) of the Extreme Ultraviolet Imager (EUI) on board Solar Orbiter (SO). The dark jet-like structure exhibits transverse oscillation during upward propagation, with a period of approximately 95s and a displacement of about 193km. The corresponding plumelet also displays transverse motion, with an oscillation period of around 99s and a displacement of about 315km. Given that both the dark jet-like structure and the plumelet share the same magnetic skeleton and have similar oscillation period, we suggest that these oscillations are the same transverse propagating wave originating in the chromosphere. This scenario is further supported by a 3D magnetohydrodynamic (MHD) simulation, in which both vertical and transverse perturbations were introduced in a stratified magnetic flux tube. The simulation successfully reproduces the upward propagation of a kink wave through both the chromospheric jet-like structure and the coronal plumelet. These results highlight the potential role of transverse waves in transferring energy from the lower solar atmosphere to the corona.