Multiple plasmoid ejections and Hard X-ray emission

Takasaki H. (Kyoto Univ.), Asai A., Kiyohara J., Shibata K.

We examined the X2.3 flare which occurred on 2000 November 24 to
examine the relation between SXR plasmoid ejections and HXR emission
which associate with solar flare. In this flare, multiple SXR
plasmoids are ejected one after another. We analyzed the relation
between the tempolral variation of HXR emission observed with
Yohkoh/HXT and the ejected timing of SXR plasmoid observed with
Yohkoh/SXT in detail. We confirmed that each plasmoid ejection is
correspond to each implusive bursts of HXR emission one to one. This
result suggests that the magnetic reconnection occures very
nonsteadily in solar flare. Furthermore, our result supports the
unified reconnection model of flares which is called the
plasmoid-induced-reconnection model (extended version of the CSHKP
model) because the plasmoid ejections play the key role in triggered
the magnetic reconnection.