The Plasma Wave Experiment (PWE) on board the Arase (ERG) satellite
The Plasma Wave Experiment (PWE) on board the Arase (ERG) satellite
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DOI：
10.1186/s40623-018-0842-4
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发表时间：
2018-05-21
影响因子：
3
通讯作者：
Shinohara, Iku
中科院分区：
文献类型：
--
作者：
Kasahara, Yoshiya;Kasaba, Yasumasa;Shinohara, Iku
地球空间电子和辐射探测（ERG）项目旨在研究地球周围相对论电子的加速和损失机制。Arase（ERG）卫星于2016年12月20日发射，旨在探索地球辐射带的中心。本文介绍了Arase卫星等离子体波实验（PWE）的技术指标。在内磁层中，等离子体波，如哨声模式合唱，电磁离子回旋波和磁声波，预计将在很宽的能量范围内与粒子相互作用，并有助于高能粒子的损失和/或加速过程。热等离子体密度是另一个关键参数，因为它控制着等离子体波的色散关系，影响波粒相互作用条件和波的传播特性。直流电场在控制内磁层的全球动力学方面也起着重要的作用。PWE由正交电场传感器（WPT）、三轴磁场传感器（MSC）、电场探测器（EFD）、波形捕获和机载频率分析器（WFC/OFA）和高频分析器（HFA）组成，用于测量磁层内的直流电场和等离子体波。使用这些传感器和接收器，PWE覆盖从DC到10 MHz的电场和从几Hz到100 kHz的磁场的宽频率范围。我们每天24小时连续产生ELF/VLF/HF距离波谱和ELF距离波形。我们还产生谱矩阵作为波的方向发现的连续数据。此外，我们间歇地产生两种波形突发数据，“合唱突发”和“EMIC突发”。“我们还将原始波形数据输入到软件型波粒相互作用分析仪（S-WPIA）中，该分析仪可导出波与粒子之间的直接相关性。最后，我们介绍了我们的PWE观测策略，并提供了一些初步的结果。
The Exploration of energization and Radiation in Geospace (ERG) project aims to study acceleration and loss mechanisms of relativistic electrons around the Earth. The Arase (ERG) satellite was launched on December 20, 2016, to explore in the heart of the Earth's radiation belt. In the present paper, we introduce the specifications of the Plasma Wave Experiment (PWE) on board the Arase satellite. In the inner magnetosphere, plasma waves, such as the whistlermode chorus, electromagnetic ion cyclotron wave, and magnetosonic wave, are expected to interact with particles over a wide energy range and contribute to high-energy particle loss and/or acceleration processes. Thermal plasma density is another key parameter because it controls the dispersion relation of plasma waves, which affects wave-particle interaction conditions and wave propagation characteristics. The DC electric field also plays an important role in controlling the global dynamics of the inner magnetosphere. The PWE, which consists of an orthogonal electric field sensor (WPT; wire probe antenna), a triaxial magnetic sensor (MSC; magnetic search coil), and receivers named electric field detector (EFD), waveform capture and onboard frequency analyzer (WFC/OFA), and high-frequency analyzer (HFA), was developed to measure the DC electric field and plasma waves in the inner magnetosphere. Using these sensors and receivers, the PWE covers a wide frequency range from DC to 10 MHz for electric fields and from a few Hz to 100 kHz for magnetic fields. We produce continuous ELF/VLF/HF range wave spectra and ELF range waveforms for 24 h each day. We also produce spectral matrices as continuous data for wave direction finding. In addition, we intermittently produce two types of waveform burst data, "chorus burst" and "EMIC burst." We also input raw waveform data into the software-type wave-particle interaction analyzer (S-WPIA), which derives direct correlation between waves and particles. Finally, we introduce our PWE observation strategy and provide some initial results.