MULTIPLE PLASMOID EJECTIONS AND ASSOCIATED HARD X-RAY BURSTS IN THE 2000 NOVEMBER 24 FLARE

Abstract

The Soft X-ray Telescope (SXT) on board Yohkoh revealed that the ejection of\nX-ray emitting plasmoid is sometimes observed in a solar flare. It was found\nthat the ejected plasmoid is strongly accelerated during a peak in the hard\nX-ray emission of the flare. In this paper we present an examination of the\nGOES X 2.3 class flare that occurred at 14.51 UT on 2000 November 24. In the\nSXT images we found multiple plasmoid ejections with velocities in the range of\n250-1500 km/s, which showed blob-like or loop-like structures. Furthermore, we\nalso found that each plasmoid ejection is associated with an impulsive burst of\nhard X-ray emission. Although some correlation between plasmoid ejection and\nhard X-ray emission has been discussed previously, our observation shows\nsimilar behavior for multiple plasmoid ejection such that each plasmoid\nejection occurs during the strong energy release of the solar flare. As a\nresult of temperature-emission measure analysis of such plasmoids, it was\nrevealed that the apparent velocities and kinetic energies of the plasmoid\nejections show a correlation with the peak intensities in the hard X-ray\nemissions.\n