Development of Solar Flares and Features of the Fine Structure of Solar Radio Emission

TL;DR

This paper investigates the origins of fine structures in solar radio bursts across decimeter and centimeter wavelengths, linking observed phenomena to magnetic reconnection and particle acceleration processes.

Contribution

It provides new insights into the physical mechanisms behind fine structures like pulsations, zebra patterns, and spikes, based on comprehensive observational data.

Findings

Radio pulsations caused by particles in magnetic reconnection regions

Zebra structures excited in magnetic traps for fast particles

Complex structures linked to magnetic islands post-CME

Abstract

The reason for the occurrence of different elements of the fine structure of solar radio bursts in the decimeter and centimeter wavelength ranges has been determined based on all available data from terrestrial and satellite observations. In some phenomena, fast pulsations, a zebra structure, fiber bursts, and spikes have been observed almost simultaneously. Two phenomena have been selected to show that the pulsations of radio emission are caused by particles accelerated in the magnetic reconnection region and that the zebra structure is excited in a source, such as a magnetic trap for fast particles. The complex combination of unusual fiber bursts, zebra structure, and spikes in the phenomenon on December 1, 2004, is associated with a single source, a magnetic island formed after a coronal mass ejection.