1980年11月5日耀斑的硬、软X射线及微波的象与Hα等光度象的比较

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A Comparison Between Hard X-ray, Soft X-ray, Microwave Burst Images and Ha Isopfaote Map of Flare on November 5, 1980

摘要: 本文对1980年11月5日22点25分开始的1B/M1-M4的Hα耀斑进行了图象处理,绘制了等光度图;与硬、软X射线象,微波象进行了比较.结果表明:1.耀斑的第一次极大,高能电子没有穿透到色球.Hα耀斑主要是由T=10⁷—10⁸K(产生软硬X射线的热区)等离子体向下传导到色球而形成.2.Hα耀斑的第二次极大,是由高能电子轰击色球而形成,Hα耀斑滞后数秒(小于5秒).3.耀斑闪光相,Hα面积与Hα强度同步增长.4.从耀斑前后的横向磁场变化(Hα短纤维的变化),估计磁能释放～10³¹尔格.

Abstract: Filtergrams of 1B/M1-M4 Ha flare starting at 22^h25^m of November 11, 1980 are digitized, and isophote lines are drawn in order to compare with hard X-ray, soft X-ray and microwave burst images. The following results are revealed.1. For the first maximum, high energy electrons do not penetrate the chromosphere. Ha flare may be caused by heat conduction from 10⁷K-10⁸K hot plasma which generated hard and soft X-ray emissions.2. The second maximum can be infered to be caused by bremsstralung of high energy electrons. The Ha flare maximum occured later than that of X-ray burst for less than 5 seconds.3. During the flash phase the area and the intensity of Ha emission enhanced simultaneously.4. From the changes of transverse magnetic fields outlined by Ha fibrils, 10³¹ engs magnetic energy is estimated to be released in this flare.