南大西洋异常对海平面μ子通量的影响
Effects of the South Atlantic Anomaly on the muon flux at sea level
摘要：
本研究的目的是研究南大西洋上空磁异常对地面μ子强度的影响和变化。根据22S和43W两台定向μ子望远镜的观测数据，这些坐标位于南大西洋异常（SAA）区域内，这是磁层中的一个凹陷。这种特性使μ子望远镜对宇宙质子和离子的响应刚性最低（$\geq 0.4$ GV）。磁层的下沉导致了若干过程，例如由于高能粒子在该区域的沉淀而导致的大气层的高传导性，以及被称为反转前电场（PRE）的纬向电场，其在晚间增强。此外，开放的磁层，安抚的磁重联的国际货币基金组织线，将发生在这个网站在白天的一面。这些因素导致SAA区域出现异常大的粒子通量，包括能量高于π介子产生阈值的粒子。主要的影响是地面上的μ子强度（$E_μ>0.2GeV$）在白昼一侧增加了十倍。结果表明，μ子增强与反转前的电场有关，有利于观测到由小的太阳瞬变事件（如共转相互作用区（CIR）和微耀斑）引起的μ子增强。这些结果的细节在本文中报告。
英文摘要：
The goal of this study is to examine the response and changes of the muon intensity at ground, due to magnetic anomaly over south Atlantic. Based on the data of two directional muon telescopes and located at 22S and 43W. These coordinates are inside of the South Atlantic Anomaly (SAA) region, a dip in the magnetosphere. This characteristic offers to the muon telescopes the lowest rigidity of response to cosmic protons and ions ($\geq 0.4$ GV). The magnetosphere's dip is responsible for several processes, such as the high conductivity of the atmospheric layers due to the precipitation of energetic particles in this region and an zonal electric field known as the pre-reversal electric field (PRE) with an enhancement at evening hours. In addition the open magnetosphere, propitiate the magnetic reconnections of the IMF lines that will take place in this site in the day side. These factors are responsible for an unusually large particle flux present in the SAA region, including particles with energies above the pion production threshold. The main effect is an increase of the muon intensity ($E_μ>0.2GeV$) at ground, in the day side, in up to ten times. We show that it is correlated with the pre-reversal electric field, and propitiate the observation of muon enhancements due to small solar transient events, such as corotating interaction region (CIR) and micro-flares. Details of these results are reported in this paper.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
