Analysis of the interaction between low-frequency waves and ions in the high-altitude cusp region observed by satellite cluster

被引：5

作者：

Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080, China ^{[1
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机构：

[1] Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences

[2] School of Earth and Space Sciences, University of Science and Technology of China

[3] Center for Space Physics, Boston University, Boston

[4] CESR, CNRS, F-31028 Toulouse Cedex 4

[5] CETP, F-78140 Velizy

[6] Space and Atmospheric Physics Group, Blackett Laboratory, Imperial College, London SW7 2BZ, Prince Consort Road

[7] Swedish Institute of Space Physics, Uppsala Division, Box 537

来源：

Chin. Phys. Lett. | 2006年 / 5卷 / 1351-1354期

关键词：

Electromagnetic fields - Electromagnetic waves - Energy transfer - Magnetic fields;

D O I：

10.1088/0256-307X/23/5/079

中图分类号：

学科分类号：

摘要：

The energy transfer between ions (protons) and low frequency waves (LFWs) in the frequency range f1 from 0.3 to 10 Hz is observed by Cluster crossing the high-altitude polar cusp. The energy transfer between low frequency waves and ions has two means. One is that the energy is transferred from low frequency waves to ions and ions energy increases. The other is that the energy is transferred from ions to low frequency waves and the ion energy decreases. Ion gyratory motion plays an important role in the energy transfer processes. The electromagnetic field of f1 LFWs can accelerate or decelerate protons along the direction of ambient magnetic field and warm or refrigerate protons in the parallel and perpendicular directions of ambient magnetic field. The peak values of proton number densities have the corresponding peak values of electromagnetic energy of low-frequency waves. This implies that the kinetic Alfven waves and solitary kinetic Alfven waves possibly exist in the high-altitude cusp region. © 2006 Chinese Physical Society and IOP Publishing Ltd.

引用

页码：1351 / 1354

页数：3

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