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Title: Multiple plasmoid ejections and associated hard x-ray bursts in the 2000 November 24 flare
Authors: Nishizuka, N.
Takasaki, H.
Asai, A.  kyouindb  KAKEN_id  orcid (unconfirmed)
Shibata, K.
Author's alias: 西塚, 直人
Keywords: acceleration of particles
magnetohydrodynamics (MHD)
Sun: coronal mass ejections (CMEs)
Sun: flares
X-rays: bursts
Issue Date: 10-Mar-2010
Publisher: American Astronomical Society
Journal title: The Astrophysical Journal
Volume: 711
Issue: 2
Start page: 1062
End page: 1072
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 (HXR) 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–1, which showed blob-like or loop-like structures. Furthermore, we also found that each plasmoid ejection is associated with an impulsive burst of HXR emission. Although some correlation between plasmoid ejection and HXR 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 HXR emissions.
Rights: (c) 2010 American Astronomical Society
DOI(Published Version): 10.1088/0004-637X/711/2/1062
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