论文标题
Voyager 1和Voyager 2原位观测的分析
Analysis of Voyager 1 and Voyager 2 in situ CME observations
论文作者
论文摘要
本文研究了两个旅行者航天器在传播期间从1到10 au中检测到的ICME，并从1977年到1980年进行了观察。通过在静脉内数据中使用多个特征来检测ICMES，主要的标志是低于预期质子温度比率的低。我们发现了航天器常见的21个事件，并根据血浆和磁场特性研究了它们的内部结构。我们发现，随着ICME向外传播，密度和磁场强度降低，它们正在扩大，与以前的研究一致。我们首先进行统计研究，然后对每种情况进行详细分析。此外，我们分析了一个案例，其中两种航天器都可以清楚地检测到冲击。此处描述的方法对于将Heliosperic Missions数据集结合在一起的其他研究可能很有趣。此外，它们强调了从过去任务中利用有用数据的重要性。
This paper studies ICMEs detected by both Voyager spacecraft during propagation from 1 to 10 AU, with observations from 1977 to 1980. ICMEs are detected by using several signatures in the in-situ data, the primary one being the low measured to expected proton temperature ratio. We found 21 events common to both spacecraft and study their internal structure in terms of plasma and magnetic field properties. We find that ICMEs are expanding as they propagate outwards, with decreasing density and magnetic field intensities, in agreement with previous studies. We first carry out a statistical study and then a detailed analysis of each case. Furthermore, we analyse one case in which a shock can be clearly detected by both spacecraft. The methods described here can be interesting for other studies combining data sets from heliospheric missions. Furthermore, they highlight the importance of exploiting useful data from past missions.
