论文标题
通过Messenger任务测量的能量电子事件中的太阳活动关系
Solar activity relations in energetic electron events measured by the MESSENGER mission
论文作者
论文摘要
目标。我们对通过Messenger任务从2010年到2015年测量的太阳能电子（参见）事件的性质之间的关系进行统计研究，以及各自的母体太阳活动现象的参数以识别它们之间的潜在相关性。在分析期间，信使helipentric距离在0.31和0.47 au之间变化。结果。在连接角度（CAS）的范围内，东部有一个不对称性，看到事件的最高峰强度为此，其中CA是连接到航天器的磁场的脚步之间的纵向分离。基于此不对称，我们定义了良好的事件的子样本，就像-65 $^{\ circ} \ leq $ ca $ \ leq+33^{\ circ} $一样。结论。基于本研究中使用接近0.4 AU数据提出的相关系数的比较，（1）耀斑和与冲击相关的过程都可能有助于大量参见事件中近相对论电子的加速，与以前的研究一致，基于接近1 AU数据； （2）与平均CME速度相比，CME驱动冲击的最大速度是研究粒子加速度相关机制的更好参数，这是通过与SEE峰强度更强的相关性所表明的。
Aims. We perform a statistical study of the relations between the properties of solar energetic electron (SEE) events measured by the MESSENGER mission from 2010 to 2015 and the parameters of the respective parent solar activity phenomena to identify the potential correlations between them. During the time of analysis MESSENGER heliocentric distance varied between 0.31 and 0.47 au. Results. There is an asymmetry to the east in the range of connection angles (CAs) for which the SEE events present the highest peak intensities, where the CA is the longitudinal separation between the footpoint of the magnetic field connecting to the spacecraft and the flare location. Based on this asymmetry, we define the subsample of well-connected events as when -65$^{\circ}\leq$ CA $\leq+33^{\circ}$. Conclusions. Based on the comparison of the correlation coefficients presented in this study using near 0.4 au data, (1) both flare and shock-related processes may contribute to the acceleration of near relativistic electrons in large SEE events, in agreement with previous studies based on near 1 au data; and (2) the maximum speed of the CME-driven shock is a better parameter to investigate particle acceleration related mechanisms than the average CME speed, as suggested by the stronger correlation with the SEE peak intensities.
