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

Journal Article · Wed Mar 10 04:00:00 EST 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/711/2/1062· OSTI ID:21394312

Nishizuka, N; Takasaki, H; Shibata, K ^[1]; Asai, A ^[2]

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1. Kwasan and Hida Observatories, Kyoto University, Yamashina, Kyoto 607-8471 (Japan)
2. Nobeyama Solar Radio Observatory, National Astronomical Observatory of Japan, Minamisaku, Nagano 384-1305 (Japan)

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{sup -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.

• OSTI ID: 21394312
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 711; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ACCELERATION
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY
FLUID MECHANICS
HARD X RADIATION
HYDRODYNAMICS
IONIZING RADIATIONS
KINETIC ENERGY
MAGNETOHYDRODYNAMICS
MAIN SEQUENCE STARS
MASS
MECHANICS
PLASMOIDS
RADIATIONS
SOFT X RADIATION
SOLAR ACTIVITY
SOLAR FLARES
STARS
STELLAR ACTIVITY
STELLAR FLARES
SUN
TELESCOPES
X RADIATION