Detection of a bolide in Jupiter's atmosphere with Juno UVS

Meridional variations of C$_2$H$_2$ in Jupiter's stratosphere from Juno UVS observations

The UVS instrument on the Juno mission records far-ultraviolet reflected sunlight from Jupiter. These spectra are sensitive to the abundances of chemical species in the upper atmosphere and to the distribution of the stratospheric haze layer. We combine observations from the first 30 perijoves of the mission in order to study the meridional distribution of acetylene (C$_2$H$_2$) in Jupiter's stratosphere. We find that the abundance of C$_2$H$_2$ decreases towards the poles by a factor of 2-4, in agreement with previous analyses of mid-infrared spectra. This result is expected from insolation r…

木星极光区域中CH4和C2H2吸收的空间变异性：来自朱诺-UVS观测的数据

Spatial variability of CH4 and C2H2 absorptions in Jupiter's auroral regions from Juno-UVS observations

利用朱诺-UVS数据研究木星极光区域中CH4和C2H2吸收的水平和垂直变异性，发现CH4密度高于C2H2，但部分区域存在异常分布，可能与仪器非线性或大气组分变化有关。

Enhanced C$_2$H$_2$ absorption within Jupiter's southern auroral oval from Juno UVS observations

Reflected sunlight observations from the Ultraviolet Spectrograph (UVS) on the Juno spacecraft were used to study the distribution of acetylene (C$_2$H$_2$) at Jupiter's south pole. We find that the shape of the C$_2$H$_2$ absorption feature varies significantly across the polar region, and this can be used to infer spatial variability in the C$_2$H$_2$ abundance. There is a localized region of enhanced C$_2$H$_2$ absorption which coincides with the location of Jupiter's southern polar aurora; the C$_2$H$_2$ abundance poleward of the auroral oval is a factor of 3 higher than adjacent quiescent…

The crucial role of HST during the NASA Juno mission: a "Juno initiative"

In 2016, the NASA Juno spacecraft will initiate its one-year mission around Jupiter and become the first probe to explore the polar regions of Jupiter. The HST UV instruments (STIS and ACS) can greatly contribute to the success of the Juno mission by providing key complementary views of Jupiter's UV aurora from Earth orbit. Juno carries an ultraviolet Spectrograph (UVS) and an infrared spectral mapper (JIRAM) that will obtain high-resolution spectral images providing the auroral counterpart to Juno's in situ particles and fields measurements with the plasma JADE and JEDI particle detectors. Th…

磁层条件对木星紫外主极光发射形态的影响——基于Juno-UVS观测

Effect of magnetospheric conditions on the morphology of Jupiter's UV main auroral emission, as observed by Juno-UVS

本研究利用Juno-UVS观测数据，通过新弧形探测技术分析木星紫外主极光发射（ME）形态随磁层状态的变化，发现ME尺寸变化与电流片磁场和磁层压缩相关，且其亮度分布与场向电流理论预期不符。

利用朱诺观测解析木星紫外极光中的注入特征

Characterising injection signatures in Jupiter's ultraviolet aurora using Juno observations

研究通过朱诺观测揭示木星紫外极光中注入特征的成因，发现磁极散射可能主导电子注入，区分了晨风暴与非晨风暴注入特征。