We explore the variation in plasma conditions through the middle magnetosphere of Jupiter with latitude and radial distance using Juno-JADE measurements of plasma density (electrons, protons, sulfur, and oxygen ions) surveyed on Orbits 5–26 between March 2017 and April 2020. On most orbits, the densities exhibit regular behavior, mapping out a disk between 10 and 50 R_J (Jovian radii). In the disk, the heavy ions are confined close to the centrifugal equator which oscillates relative to the spacecraft due to the ∼10° tilt of Jupiter's magnetic dipole. Exploring each crossing of the plasma disk shows there are some occasions where the density profiles are smooth and well-defined. At other times, small-scale structures suggest temporal and/or spatial variabilities. There are some exceptional orbits where the outer regions (30–50 R_J) of the plasma disk show uniform depletion, perhaps due to enhanced ejection of plasmoids down the magnetotail, possibly triggered by solar wind compression events.

中文翻译：

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木星等离子体盘中朱诺观测的调查：密度

我们使用Juno-JADE对 2017 年 3 月至 2020 年 4 月期间在轨道 5-26 上勘测的等离子体密度（电子、质子、硫和氧离子）的测量，探索了通过木星中磁层的等离子体条件随纬度和径向距离的变化。在大多数轨道上，密度表现出规则行为，映射出一个介于 10 和 50 R _J之间的圆盘（木星半径）。在圆盘中，重离子被限制在离心赤道附近，由于木星磁偶极子倾斜 10°，离心赤道相对于航天器振动。探索等离子体盘的每个交叉点表明，在某些情况下，密度分布是平滑且明确的。在其他时候，小规模结构表明时间和/或空间变化。在一些特殊的轨道上，等离子体盘的外部区域 (30-50 R _J ) 显示出均匀的耗尽，这可能是由于沿磁尾的等离子体团的喷射增强，可能是由太阳风压缩事件触发的。