We present statistical distributions of whistler-mode chorus and hiss waves at frequencies ranging from the local proton gyrofrequency to the equatorial electron gyrofrequency (f_ce,eq) in Jupiter's magnetosphere based on Juno measurements. The chorus wave power spectral densities usually follow the f_ce,eq variation with major wave power concentrated in the 0.05f_ce,eq–f_ce,eq frequency range. The hiss wave frequencies are less dependent on f_ce,eq variation than chorus with major power concentrated below 0.05f_ce,eq, showing a separation from chorus at M < 10. Our survey indicates that chorus waves are mainly observed at 5.5 < M < 13 from the magnetic equator to 20° latitude, consistent with local wave generation near the equator and damping effects. The hiss wave powers extend to 50° latitude, suggesting longer wave propagation paths without attenuation. Our survey also includes the whistler-mode waves at high latitudes which may originate from the Io footprint, auroral hiss, or propagating hiss waves reflected to high M shells.

中文翻译：

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木星磁层中惠斯勒模式波幅值和频谱的调查


我们根据 Juno 测量结果，在木星磁层中展示了从本地质子陀螺频率到赤道电子陀螺频率 （f_ce，eq） 频率范围内的惠斯勒模式合唱波和嘶嘶声波的统计分布。合唱波功率谱密度通常遵循 f_ce，eq 变化，主要波功率集中在 0.05f_ce，eq–f_ce，eq 频率范围内。与主功率集中在 0.05f_ce，eq 以下的合唱相比，嘶嘶声波频率对 f_ce，eq 变化的依赖性较小，在 M < 10 处显示出与合唱的分离。我们的调查表明，从磁赤道到纬度 20° 的 5.5 < M < 13 处主要观测到紫颂波，这与赤道附近的局部波产生和阻尼效应一致。嘶嘶声波功率延伸到 50° 纬度，表明波传播路径更长，没有衰减。我们的调查还包括高纬度地区的惠斯勒模式波，这些波可能来自木卫一足迹、极光嘶嘶声或反射到高 M 壳层的传播嘶嘶声波。