Multiple eruptions from magnetic flux emergence

TL;DR

This study investigates how the emergence of a toroidal magnetic flux tube into a magnetized corona can trigger multiple large-scale eruptions, analyzed through 3D MHD simulations focusing on eruption mechanisms.

Contribution

It provides new insights into the eruption processes caused by flux emergence and discusses the trigger mechanisms in relation to established eruption models.

Findings

Multiple eruptions occur during flux emergence.

Eruption triggers are linked to magnetic field interactions.

The study relates eruption physics to known models.

Abstract

In this paper we study the effects of a toroidal magnetic flux tube emerging into a magnetized corona, with an emphasis on large-scale eruptions. The orientation of the fields is such that the two flux systems are almost antiparallel when they meet. We follow the dynamic evolution of the system by solving the 3D MHD equations using a Lagrangian remap scheme. Multiple eruptions are found to occur. The physics of the trigger mechanisms are discussed and related to well-known eruption models.