A new discovery was made using the radio receiver instrument on the Canadian enhanced polar outflow probe (e‐POP) showing that strong plasma wave emissions (SPWE) are seen near 17 kHz and 300 Hz. The frequency of these emissions are affected by small injections of neutral gas from the Cygnus spacecraft. The technique of using a 150 g/s thruster to change frequencies and intensities of plasma waves has provided evidence that a finite k_z lower hybrid mode may the source of the SPWE waves. SPWE observations in space are a sensitive diagnostic tool to measure both natural and manmade changes in the earth's ion composition.

中文翻译：

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天鹅座航天器的发动机燃烧引起的具有频移的强等离子波发射的卫星观测

使用加拿大增强型极性流出探针（e-POP）上的无线电接收器仪器发现了一个新发现，表明在17 kHz和300 Hz附近可以看到强烈的等离子体波发射（SPWE）。这些排放的频率受到来自天鹅座航天器的少量中性气体注入的影响。使用150 g / s推进器改变等离子波的频率和强度的技术提供了证据，证明有限的k _z低混合模式可能是SPWE波的来源。SPWE在太空中的观测是一种敏感的诊断工具，可以测量地球离子组成的自然变化和人为变化。