Multiple Plasmoid Ejections and Associated Hard X-ray Bursts in the 2000 November 24 Flare

TL;DR

This study analyzes a solar flare event on November 24, 2000, revealing multiple plasmoid ejections with velocities up to 1500 km/s that are closely associated with impulsive hard X-ray bursts, indicating a link between plasmoid dynamics and energy release.

Contribution

It provides detailed observations of multiple plasmoid ejections and their correlation with hard X-ray bursts during a solar flare, highlighting the relationship between plasmoid velocities, energies, and flare emissions.

Findings

Multiple plasmoid ejections observed with velocities of 250-1500 km/s.

Each plasmoid ejection coincides with impulsive hard X-ray bursts.

Plasmoid velocities and energies correlate with peak hard X-ray intensities.

Abstract

The Soft X-ray Telescope (SXT) on board Yohkoh revealed that the ejection of X-ray emitting plasmoid is sometimes observed in a solar flare. It was found that the ejected plasmoid is strongly accelerated during a peak in the hard X-ray emission of the flare. In this paper we present an examination of the GOES X 2.3 class flare that occurred at 14.51 UT on 2000 November 24. In the SXT images we found multiple plasmoid ejections with velocities in the range of 250-1500 km/s, which showed blob-like or loop-like structures. Furthermore, we also found that each plasmoid ejection is associated with an impulsive burst of hard X-ray emission. Although some correlation between plasmoid ejection and hard X-ray emission has been discussed previously, our observation shows similar behavior for multiple plasmoid ejection such that each plasmoid ejection occurs during the strong energy release of the solar flare. As a result of temperature-emission measure analysis of such plasmoids, it was revealed that the apparent velocities and kinetic energies of the plasmoid ejections show a correlation with the peak intensities in the hard X-ray emissions.