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A STUDY OF THE SOLAR INJECTION FOR ELEVEN IMPULSIVE ELECTRON/ ~3HE-RICH SEP EVENTS

机译:对富有冲动电子/〜3HE的SEP事件的太阳注射研究

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We examine the solar injection of electrons and ions in eleven electron/~3He-rich SEP events with a clear velocity dispersion, the ~3He/~4He ratio > 0.1, and good count statistics. The velocity dispersion analysis shows that both electrons and ions experience nearly scatter-free propagation. Thus, we are able to obtain the electron injection profile versus energy from in situ observations for all the selected events, and the ion injection profile for one event with good enough ion statistics. We estimate the onset time and peak time of the solar ion injection from in situ observations for the other events. We find a systematic delay of the solar injection of ~3He-rich ions relative to impulsive electrons. The majority of the events have no Ha and GOES SXR flares, but all have a type Ⅲ burst and one has a coronal type Ⅱ burst. Ten events with the SOHO/LASCO coronagraph coverage have a west-limb CME that begins close to the start time of electron injection, and reaches a median altitude of ~4.2 Rs above the photosphere at the start time of ion injection. The majority of these CMEs are fast and narrow.
机译:我们在十一电子/〜3HE的SEP事件中检查了电子和离子的太阳能注射,具有透明速度分散,〜3HE /〜4HE比率> 0.1和良好的计数统计。速度分散分析表明电子和离子的经历几乎不疏散传播。因此,我们能够从出于所有所选事件的原位观察获得电子注入轮廓与能量,以及具有足够好的离子统计的一个事件的离子注射谱。我们估计太阳能离子注入的起始时间和峰值时间,从原位观察到其他事件。我们发现相对于脉冲电子的富含3 HE的离子的太阳注射系统的系统延迟。大多数事件没有HA并进入SXR耀斑,但均具有Ⅲ型突发,并且具有冠状Ⅱ型爆发。 SOHO / Lasco Coronagraph覆盖的十个事件具有西肢CME,始于电子注入的开始时间,并在离子注射的开始时间达到Photosphere上方的〜4.2卢比的中值高度。这些CME的大多数是快速且狭窄的。

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