Identification of Interplanetary Coronal Mass Ejections at Ulysses Using Multiple Solar Wind Signatures
Identification of Interplanetary Coronal Mass Ejections at Ulysses Using Multiple Solar Wind Signatures
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DOI：
10.1007/s11207-014-0540-8
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发表时间：
2014-05
期刊：
影响因子：
2.8
通讯作者：
I. Richardson
中科院分区：
文献类型：
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作者：
I. Richardson
以前的研究已经讨论了基于各种太阳风特征来识别地球附近的行星际日冕物质抛射（ICMEs）。特别是，已经开发出了识别异常低太阳风质子温度（Tp）区域和相对于环境太阳风组成的等离子体成分异常的方法，这些异常通常指示ICMEs。在这项研究中，类似的方法被应用于1990年发射的尤利西斯宇宙飞船的观测，尤利西斯宇宙飞船被放置在太阳两极上空的日心轨道上。在2009年结束的航天器任务中，大约279个可能的ICMEs被确定。这些鉴定是对尤利西斯号数据的其他研究中独立发现的补充，但也发现了一些额外的事件。比较了尤利西斯号探测到的ICMEs与在地球附近和内日球层观测到的ICMEs的性质。
Previous studies have discussed the identification of interplanetary coronal mass ejections (ICMEs) near the Earth based on various solar wind signatures. In particular, methods have been developed of identifying regions of anomalously low solar wind proton temperatures (Tp) and plasma compositional anomalies relative to the composition of the ambient solar wind that are frequently indicative of ICMEs. In this study, similar methods are applied to observations from theUlyssesspacecraft that was launched in 1990 and placed in a heliocentric orbit over the poles of the Sun. Some 279 probable ICMEs are identified during the spacecraft mission, which ended in 2009. The identifications complement those found independently in other studies of theUlyssesdata, but a number of additional events are identified. The properties of the ICMEs detected atUlyssesand those observed near the Earth and in the inner heliosphere are compared.