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arXiv 0905.1816astro-ph.SR
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2005年1月20日耀斑和CME期间相对论质子的加速

Acceleration of Relativistic Protons during the 20 January 2005 Flare and CME

S. Masson, K. -L. Klein, R. Buetikofer, E. Flueckiger, V. Kurt, B. Yushkov, S. Krucker

摘要:

在大耀斑/CME事件期间的相对论太阳质子的起源还没有唯一的确定到目前为止,我们进行了详细的比较分析的时间剖面的相对论质子的全球网络的中子监测器在地球上的电磁签名的粒子加速在太阳日冕中的大粒子事件的2005年1月20日。从中子监测器数据导出的相对论质子的强度-时间曲线表明两个连续的峰。我们发现,微波,硬X射线和伽马射线的排放显示几个情节的粒子加速脉冲耀斑阶段内。在地球上探测到的第一批相对论质子与相对论电子以及在第二集期间产生π衰变伽马射线的质子一起加速。地球上相对论质子分布图的第二个峰值伴随着光球层上方大约1个太阳半径范围内日冕中粒子加速的新特征,这些特征由低强度的硬X射线和微波发射以及电子束和日冕冲击波的重新无线电发射所揭示。我们讨论的意见,在不同的情况下,粒子加速的日冕。

英文摘要:

The origin of relativistic solar protons during large flare/CME events has not been uniquely identified so far.We perform a detailed comparative analysis of the time profiles of relativistic protons detected by the worldwide network of neutron monitors at Earth with electromagnetic signatures of particle acceleration in the solar corona during the large particle event of 20 January 2005. The intensity-time profile of the relativistic protons derived from the neutron monitor data indicates two successive peaks. We show that microwave, hard X-ray and gamma-ray emissions display several episodes of particle acceleration within the impulsive flare phase. The first relativistic protons detected at Earth are accelerated together with relativistic electrons and with protons that produce pion decay gamma-rays during the second episode. The second peak in the relativistic proton profile at Earth is accompanied by new signatures of particle acceleration in the corona within approximatively 1 solar radius above the photosphere, revealed by hard X-ray and microwave emissions of low intensity, and by the renewed radio emission of electron beams and of a coronal shock wave. We discuss the observations in terms of different scenarios of particle acceleration in the corona.

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