Dependence of the Intensity of Solar Energetic Particle Event on the Twin-CME:Two Cases Study
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摘要: 太阳高能粒子事件常伴随太阳耀斑和日冕物质抛射事件(Coronal Mass Ejections,CME)出现,由于太阳高能粒子事件的关键因素是双CME的相互作用,利用SOHO卫星观测的高能粒子强度、耀斑强度以及CME的相对高度与时间,通过高度与时间拟合得到的速度,分析了2001年4月15日和2005年1月20日的太阳高能粒子事件强度与相关双CME事件的关系,发现这两个太阳高能粒子事件中E ≥ 10MeV质子的强度与双CME事件无关.因此在这两次太阳高能粒子事件早期,E ≥ 10MeV质子的强度只与相关太阳耀斑和CME有关.Abstract: Solar energetic particle events often associate with solar flare and Coronal Mass Ejection (CME).Because the interaction of twin-CME is the key factor of solar energetic particle events,by using the SOHO satellite observations of energetic particle strength,flare intensity and relative height and time of CMEs,and through the speed of height fitting,the relationship between the intensity of Solar Energetic Particle events (SEP) and the associated twin-CME is investigated.The two SEP occurred on 15 April 2001 and 20 January 2005 respectively.The results show that the intensities of the two SEP have no relationship with the associated twin-CME.The protons of E ≥ 10 MeV are only associated with the concurrent solar flare and CME.
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Key words:
- Solar energetic particle event /
- Twin-CMEs /
- Particle acceleration
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