Multi-Wavelength View of Flare Events on November 20, 2003

TL;DR

This study examines two solar flare events on November 20, 2003, using multi-wavelength observations to understand magnetic interactions, filament destabilization, and CME eruption mechanisms.

Contribution

It provides detailed analysis of magnetic reconnection, filament interaction, and CME evolution during the specific flare events, linking observational data to eruption processes.

Findings

Filament interaction led to a slowly rising flare.

Magnetic reconnection occurred in two stages.

CME propagation was characterized relative to the ecliptic plane.

Abstract

We analyze two flare events which occurred in active region NOAA 501 on November 20, 2003. The H-alpha and magnetogram measurements show interaction between two filaments which produced a slowly rising flare event, corresponding to two stages of magnetic reconnection. The relative clockwise rotation between the two sunspot systems caused filament destabilization. The cusp-shaped magnetic field in the main phase of the second flare and its evolution in correlation with ribbon separation provide evidence for the cause of the CME eruption. The propagation and orientation of the CME with respect to the ecliptic plane is illustrated by IPS images.