On Properties of Energetic Coronal Mass - Flare Events

M. Youssef
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Abstract

ABSTRACT In the present paper, the properties of more energetic coronal mass ejections (ECMEs) (kinetic energy ≥1E + 30 ergs) observed between the years from 1996 to 2006 were studied. Through this period and under certain time-based and spatial conditions 253 Flare-ECMEs were selected . These 253 energetic CME-Flare events separated into two groups according to their time of detection, Before Flare-ECME events and After Flare–ECME event. This study indicates that the mean CME width for both before and after Flare-ECMEs are 90 and 100 degrees, respectively. Also, it was found that the before Flare-ECMEs are in average faster than the after Flare-ECMEs. The results show also both before and after Flare-ECMEs are wider than other CMEs. Besides it was found that the before Flare-ECMEs are in average faster than the after Flare-ECMEs, while the after Flare-ECMEs are in average more massive than before Flare – ECMEs. Finally it was found that both after and before Flare-ECMEs has negative mean acceleration.
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高能日冕物质耀斑事件的性质
摘要本文研究了1996 ~ 2006年观测到的高能日冕物质抛射(ECMEs)(动能≥1E + 30ergs)的性质。在此期间,在一定的时间和空间条件下,选取了253个耀斑- ecme。根据探测时间的不同,这253次高能日冕物质抛射-耀斑事件可分为耀斑- ecme事件前和耀斑- ecme事件后两组。研究表明,耀斑- ecmes前后的平均CME宽度分别为90度和100度。耀斑爆发前的平均速度比耀斑爆发后的平均速度快。结果还表明,耀斑-日冕物质抛射前后的宽度都大于其他类型的日冕物质抛射。此外,耀斑-ECMEs前后的平均速度比耀斑-ECMEs前后快,耀斑-ECMEs前后的平均质量比耀斑-ECMEs前后大。最后发现耀斑- ecmes前后的平均加速度均为负。
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