Pre-flare heating around the temperature minimum region found right prior to an X-class flare

被引：0
|
作者：
Kurokawa, H [1 ]
Ishii, TT [1 ]
Wang, TJ [1 ]
Shine, R [1 ]
机构：
[1] Kyoto Univ, Kwason Observ, Yamashima Ku, Kyoto 6078471, Japan
来源：
MULTI-WAVELENGTH OBSERVATIONS OF CORONAL STRUCTURE AND DYNAMICS | 2002年 / 13卷
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Flare producing active region NOAA 9026 (June 2000) provided us with a rare opportunity to study a twisted magnetic flux rope and its rapidly-untwisting motions causing a strong flare. From the analyses of the evolution of this region we found for the first time clear evidence of pre-flare heating or energy release from the upper photosphere through the lower chromosphere starting about two hours before an X-class coronal flare. We conclude that the pre-flare energy release was caused by magnetic field reconnection in the lower atmosphere, where the emergence of a twisted magnetic flux rope was abruptly enhanced by the kink instability.
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页码：257 / 258
页数：2
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