Dispersive Auroral Hiss
Dispersive Auroral Hiss
复制标题
分散的极光嘶嘶声
DOI：
10.1038/physci238118a0
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发表时间：
1972
期刊：
影响因子：
64.8
通讯作者：
J. Siren
中科院分区：
文献类型：
--
作者：
J. Siren
在极光嘶嘶声的频率（高达500千赫），无线电能量通过磁层的传播是在哨声模式，这是分散的：传播速度取决于频率。在这里，我报告极光嘶嘶声的爆发如此短暂，明显地表现出哨声模式色散。这些脉冲串中的每一个的持续时间为0.1秒的量级。我选择了“快速嘶嘶声”这个名字，以区别于Carpenteret al.1报道的变化更慢的周期性嘶嘶声发射，并表明它们与极光嘶嘶声的亲缘关系。这些嘶嘶声是在地面站观测到的，因此不同于史密斯2号用Alouette II卫星上的甚低频接收器观测到的持续时间为0.05秒的“极光束模式”。
AT the frequencies of auroral hiss (up to 500 kHz), the propagation of radio energy through the magnetosphere is in the whistler mode, which is dispersive: the velocity of propagation is dependent on frequency. Here I report bursts of auroral hiss so brief as to have distinctly exhibited whistler-mode dispersion. The duration of each of these bursts was of the order of 0.1 s. I have chosen the name “fast hisslers” to distinguish them from the more slowly varying, periodic hissler emissions reported by Carpenteret al.1and to indicate their kinship with auroral hiss. These hisslers were observed at a ground station and therefore differ from the 0.05 s duration “auroral beam modes” observed by Smith2with the very low frequency receiver on the Alouette II satellite.