Formation of zebra pattern in low-frequency Jovian radio emission

被引:11
作者
Kuznetsov, A. A. [1 ,2 ]
Vlasov, V. G. [3 ]
机构
[1] Armagh Observ, Armagh BT61 9DG, North Ireland
[2] Inst Solar Terr Phys, Irkutsk 664033, Russia
[3] Irkutsk State Tech Univ, Irkutsk 664074, Russia
基金
俄罗斯基础研究基金会;
关键词
Zebra pattern; Double plasma resonance; Jupiter magnetosphere; Kilometric radio emission; IO PLASMA TORUS; ASTRONOMY OBSERVATIONS; KILOMETRIC RADIATION; INSTABILITY; MODEL; DRIFT;
D O I
10.1016/j.pss.2012.09.005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate the formation of zebra-like fine spectral structures (consisting of several parallel bands in the dynamic spectrum) in the Jovian broadband kilometric radiation; such radio bursts were observed by Cassini in 2000/2001. We assume that the emission is generated due to a plasma mechanism in the Io plasma torus. We have shown that the double plasma resonance effect (that was proposed earlier as a formation mechanism of the solar zebra patterns) is able to produce the observed spectral structures. The observed frequency drifts are caused, most likely, by the dynamics of the electron acceleration site. The required conditions in the emission source are discussed. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:167 / 172
页数:6
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