• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Solar Physics >Solar Energetic Particle Events in the 23rd Solar Cycle: Interplanetary Magnetic Field Configuration and Statistical Relationship with Flares and CMEs
【24h】

Solar Energetic Particle Events in the 23rd Solar Cycle: Interplanetary Magnetic Field Configuration and Statistical Relationship with Flares and CMEs

机译：第23个太阳周期中的太阳高能粒子事件：行星际磁场配置以及与耀斑和CME的统计关系

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We study the influence of the large-scale interplanetary magnetic field configuration on the solar energetic particles (SEPs) as detected at different satellites near Earth and on the correlation of their peak intensities with the parent solar activity. We selected SEP events associated with X- and M-class flares at western longitudes, in order to ensure good magnetic connection to Earth. These events were classified into two categories according to the global interplanetary magnetic field (IMF) configuration present during the SEP propagation to 1 AU: standard solar wind or interplanetary coronal mass ejections (ICMEs). Our analysis shows that around 20 % of all particle events are detected when the spacecraft is immersed in an ICME. The correlation of the peak particle intensity with the projected speed of the SEP-associated coronal mass ejection is similar in the two IMF categories of proton and electron events, ≈ 0.6. The SEP events within ICMEs show stronger correlation between the peak proton intensity and the soft X-ray flux of the associated solar flare, with correlation coefficient r=0.67±0.13, compared to the SEP events propagating in the standard solar wind, r=0.36±0.13. The difference is more pronounced for near-relativistic electrons. The main reason for the different correlation behavior seems to be the larger spread of the flare longitude in the SEP sample detected in the solar wind as compared to SEP events within ICMEs. We discuss to what extent observational bias, different physical processes (particle injection, transport, etc.), and the IMF configuration can influence the relationship between SEPs and coronal activity.
机译：我们研究了大规模行星际磁场配置对在地球附近不同卫星处检测到的太阳高能粒子（SEPs）的影响，以及它们的峰值强度与母体太阳活动的相关性。我们选择了与西经的X级和M级耀斑相关的SEP事件，以确保与地球的良好磁连接。这些事件根据SEP传播到1AU期间存在的全球行星际磁场（IMF）配置分为两类：标准太阳风或行星际冠状物质抛射（ICME）。我们的分析表明，当航天器浸入ICME中时，可以检测到所有粒子事件的大约20％。在质子和电子事件这两个IMF类别中，峰值粒子强度与SEP相关冠状物质抛射速度的相关性相似，≈0.6。与在标准太阳风中传播的SEP事件相比，ICME中的SEP事件显示峰值质子强度与相关太阳耀斑的软X射线通量之间的相关性更强，相关系数r = 0.67±0.13。 ±0.13。对于近相对论电子，这种差异更为明显。相关行为不同的主要原因似乎是，与ICME内部的SEP事件相比，太阳风中检测到的SEP样本的耀斑经度分布更大。我们讨论了观察偏差，不同的物理过程（粒子注入，传输等）以及IMF配置在多大程度上可以影响SEP与冠状动脉活动之间的关系。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号