Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090764 |
A persistent depletion of plasma ions within Jupiter's auroral polar caps | |
C. J. Pollock; R. W. Ebert; F. Allegrini; F. Bagenal; D. J. McComas; J. R. Szalay; P. Valek | |
2020-11-16 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Regions poleward of Jupiter's main auroral ovals are largely devoid of 0.01 keV/q to 46 keV/q ions. We report ion measurements from the plasma instrument on the Juno spacecraft in polar orbit around Jupiter that characterize the presence or absence of structured ion fluxes poleward of the main ovals. We approximate geometric centers of published north and south Jovian main ovals and develop a probability metric for observation of plasma ions as a function of angular distance from these centers to the magnetic foot points of the observations, in the north and south separately. Using data from Juno's first 26 perijoves, at Jovicentric distances of 1.06 to 12 RJ, this metric shows a systematic decrease within both north and south main ovals, in the probability of observing plasma ions as the chosen centers are approached. This is consistent with previous reports of large electrostatic potential drops above Jupiter's polar caps. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/304369 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | C. J. Pollock,R. W. Ebert,F. Allegrini,et al. A persistent depletion of plasma ions within Jupiter's auroral polar caps[J]. Geophysical Research Letters,2020. |
APA | C. J. Pollock.,R. W. Ebert.,F. Allegrini.,F. Bagenal.,D. J. McComas.,...&P. Valek.(2020).A persistent depletion of plasma ions within Jupiter's auroral polar caps.Geophysical Research Letters. |
MLA | C. J. Pollock,et al."A persistent depletion of plasma ions within Jupiter's auroral polar caps".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
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