VOYAGER 2 OBSERVATIONS OF PLASMAS AND FLOWS OUT TO 104 AU
VOYAGER 2 OBSERVATIONS OF PLASMAS AND FLOWS OUT TO 104 AU
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DOI：
10.1088/0004-637x/792/2/126
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发表时间：
2014-08
期刊：
影响因子：
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通讯作者：
J. Richardson;R. Decker
中科院分区：
文献类型：
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作者：
J. Richardson;R. Decker
旅行者2号已经穿过了日鞘的20个Au;假设日鞘的厚度与旅行者1号相同，它现在是到达日球顶的三分之二。等离子体数据通常质量良好，尽管等离子体的流动角度增加使得分析更加困难。平均等离子体速度保持不变，但流动角在RT平面中增加到几乎60°，在RN平面中增加到几乎30°。自2011年观察到密度增加以来，平均密度和热速度一直保持不变。V2等离子体流来自等离子体科学实验（PLS）的数据和低能带电粒子（LECP）质子各向异性的比较得到良好的协议，除了当重离子的贡献或非对流质子各向异性的LECP数据中观察到。
Voyager 2 has crossed through 20 AU of the heliosheath; assuming the same heliosheath thickness as at Voyager 1, it is now two-thirds of the way to the heliopause. The plasma data are generally of good quality, although the increasing flow angle of the plasma makes analysis more difficult. The average plasma speed has remained constant but the flow angles have increased to almost 60° in the RT plane and to almost 30° in the RN plane. The average density and thermal speed have been constant since a density increase observed in 2011. Comparison of V2 plasma flows derived from plasma science experiment (PLS) data and Low Energy Charged Particle (LECP) proton anisotropies give good agreement except when heavy ion contributions or non-convective proton anisotropies are observed in the LECP data.