Connection among spacecrafts and ground level observations of small solar transient events
Connection among spacecrafts and ground level observations of small solar transient events
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航天器与小型太阳瞬变事件地面观测之间的联系
DOI：
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发表时间：
2011
期刊：
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通讯作者：
K. H. Tsui
中科院分区：
文献类型：
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作者：
Carlos Augusto;A. Fauth;C. Navia;Hisatake Shigeouka;K. H. Tsui
概述了与图皮 μ 子望远镜在地面记录到的 μ 子增强（缺陷）相关的小型太阳瞬变事件的搜索结果。其中，有3次行星际激波和2次小规模太阳耀斑，其X射线发射通量远小于1天文单位时的10 − 5 W m−2（GOES-Tupi连接）。其中两次行星际激波被归类为共旋转相互作用区域，第三次激波是由于 CME（日冕物质抛射）喷射物（ACE 和 SOHO-Tupi 连接）在地球附近的通过而引起的。在大多数情况下，仅用航天器仪器观察到来自这些事件的粒子过量（不足）。然而，图皮望远镜位于海平面和南大西洋异常区（SAA）内，该区域的磁层屏蔽效应不是完美的球形，并显示出“倾斜”。这一事实使得μ介子望远镜能够实现对初级和次级带电粒子（≥0.1 GV）的低刚性响应。已发现显着性高于 4σ 的 μ 子过量（缺陷）。这些在地面观测到的事件与航天器观测到的太阳瞬变事件存在时间相关性，这强烈表明它们之间存在真正的联系。报告了这些观察结果的细节。
An overview of the results of the search for small solar transient events, in association with muon enhancements (deficits) registered at ground-level by the Tupi muon telescopes, is presented. Among the events, there are three interplanetary shocks and two solar flares of small scale whose X-ray emission flux is much smaller than 10 − 5 W m−2 at 1 AU (GOES-Tupi connection). Two of the interplanetary shocks are cataloged as corotating interaction region and the third shock is due to the passage of a CME (coronal mass ejection) ejecta (ACE and SOHO-Tupi connection) in the Earth’s proximities. In most cases, the particles excess (deficit) coming from these events have only been observed with spacecraft instruments. However, the Tupi telescopes are located at sea level and within the South Atlantic Anomaly (SAA), a region where the shielding effect of the magnetosphere is not perfectly spherical and shows a ‘dip’. This fact enables the muon telescopes to achieve a low rigidity of response to primary and secondary charged particles (≥ 0.1 GV). Muon excesses (deficits) with significances above 4σ have been found. These events observed at ground admit a temporal correlation with solar transient events observed by spacecrafts, which suggests strongly a real connection between them. Details of these observations are reported.