Spatially Resolved Moving Radio Burst in Association with an EUV Wave

TL;DR

This study combines radio and EUV imaging to analyze a solar eruption, revealing the emission mechanism of a moving radio burst, its 3D location, and evidence of CME shocks accelerating electrons quasiperiodically.

Contribution

It provides new insights into the emission mechanism and 3D positioning of a moving radio burst during a solar eruption, linking it to CME shocks.

Findings

Identified the emission mechanism of the moving radio burst.

Determined the 3D location of the radio source relative to the EUV wave.

Found evidence of CME shocks causing quasiperiodic electron acceleration.

Abstract

Coronal mass ejections (CMEs) are large clouds of magnetized plasma ejected from the Sun, and are often associated with acceleration of electrons that can result in radio emission via various mechanisms. However, the underlying mechanism relating the CMEs and particle acceleration still remains a subject of heated debate. Here, we report multi-instrument radio and extreme ultraviolet (EUV) imaging of a solar eruption event on 24 September 2011. We determine the emission mechanism of a moving radio burst, identify its three-dimensional (3D) location with respect to a rapidly expanding EUV wave, and find evidence for CME shocks that produce quasiperiodic acceleration of electron beams.