基于Juno/JIRAM数据表明木卫一上不存在岩浆海洋的证据
No evidence of magma ocean on Io based on Juno/JIRAM data
AI总结：
本文通过指出饱和数据、M滤光片代理不完整以及纬度依赖性统计不显著三个问题，反驳了基于Juno/JIRAM数据支持木卫一存在岩浆海洋的结论。
摘要：
最近一篇论文（参考文献1）利用Juno/JIRAM仪器获取的木卫一红外图像推导了光谱辐射亮度的纬度依赖性，并得出结论认为这种纬度依赖性与岩浆海洋模型一致。我们对他们的结论提出质疑，并提请注意其分析中可能存在的一些问题。在这封信中，我们将使用三个论据来表明：（1）参考文献1的论文使用了饱和数据；（2）JIRAM成像仪的M滤光片只是总功率输出的一个弱且不完整的代理指标；最后（3）即使假设辐射亮度被正确估计，4.8微米光谱辐射亮度的纬度依赖性在统计上也不显著。这些事实综合起来表明，参考文献1中呈现的结果不足以确认与木卫一上的岩浆海洋模型的一致性。
英文摘要：
A recent paper (ref. 1) used infrared images of Io acquired by the Juno/JIRAM instrument to derive a latitudinal dependence of the spectral radiance and conclude that such latitudinal dependence is consistent with a magma ocean model. We challenge their conclusions, and we draw attention to some potential issues with their analysis. In this letter, we will use three arguments to show that: (1) the (ref. 1) paper uses saturated data; (2) the M-filter of the JIRAM imager is only a weak and incomplete proxy for the total power output; and finally (3) even assuming that the radiance was correctly estimated, the latitudinal dependence of the 4.8-$μ$m spectral radiance is not statistically significant. These facts, taken together, demonstrate that the results presented in (ref. 1) are not sufficient to confirm consistency with a magma ocean model on Io.
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