Excitation of standing kink oscillations in coronal loops

TL;DR

This paper reviews how standing kink oscillations in coronal loops are excited, focusing on time-dependent models relevant to flares and CMEs, and discusses analytical, numerical, and damping aspects across various geometries.

Contribution

It provides a comprehensive review of excitation mechanisms for kink oscillations, emphasizing the importance of time-dependent analysis and damping processes in coronal loop models.

Findings

Time-dependent models are crucial for understanding flare and CME-induced oscillations.

Both analytical and numerical approaches are used across different geometries.

Damping mechanisms significantly influence the evolution of kink oscillations.

Abstract

In this work we review the efforts that have been done to study the excitation of the standing fast kink body mode in coronal loops. We mainly focus on the time-dependent problem, which is appropriate to describe flare or CME induced kink oscillations. The analytical and numerical studies in slab and cylindrical loop geometries are reviewed. We discuss the results from very simple one-dimensional models to more realistic (but still simple) loop configurations. We emphasise how the results of the initial value problem complement the eigenmode calculations. The possible damping mechanisms of the kink oscillations are also discussed.