HST在NASA朱诺飞行任务中的关键作用：“朱诺倡议”

朱诺射电科学实验：模型、算法和灵敏度分析

On the Juno Radio Science Experiment: models, algorithms and sensitivity analysis

朱诺号是美国宇航局于2011年发射的一项任务，目的是研究木星。探测器将于2016年抵达该行星，并将在极地高偏心轨道上放置一年，以研究该行星的组成、重力和磁场。意大利航天局（意空局）提供了用于重力实验的无线电科学仪器KaT（Ka波段转换器），其目的是通过绘制木星重力图来研究木星的深层结构：这种仪器利用了与欧空局水星基石飞行任务BepiColombo正在开发的类似工具的协同作用。比萨大学天体力学小组是朱诺号意大利小组的一部分，正在开发一种轨道确定和参数估计软件，用于独立于美国航天局ODP软件处理实际数据。本文有两个目标：第一，讲述该软件的开发过程，重点介绍所使用的模型，第二，对任务感兴趣的参数进行敏感性分析。

Modeling the disequilibrium species for Jupiter and Saturn: Implications for Juno and Saturn entry probe

Disequilibrium species have been used previously to probe the deep water abundances and the eddy diffusion coefficient for giant planets. In this paper, we present a diffusion-kinetics code that predicts the abundances of disequilibrium species in the tropospheres of Jupiter and Saturn with updated thermodynamic and kinetic data. The dependence on the deep water abundance and the eddy diffusion coefficient is investigated. We quantified the disagreements in CO kinetics that comes from using different reaction networks and identified C$_2$H$_6$ as a useful tracer for the eddy diffusion coeffici…

Goldstone Apple Valley Radio Telescope Monitoring Flux Density of Jupiter's Synchrotron Radiation during the Juno Mission

Goldstone Apple Valley Radio Telescope (GAVRT) is a science education partnership among NASA, the Jet Propulsion Laboratory (JPL), and the Lewis Center for Educational Research (LCER), offering unique opportunities for K -12 students and their teachers. As part of a long-term Jupiter synchrotron radiation (JSR) flux density monitoring program, LCER has been carrying out Jupiter observations with some student participation. In this paper we present the results of processed data sets observed between March 6, 2015 and April 6 2018. The data are divided into 5 epochs, grouped by time. We derive J…

朱诺微波辐射计观测揭示木星极地大气更温暖

Juno Microwave Radiometer Observations Reveal A Warmer Polar Atmosphere on Jupiter

朱诺微波辐射计观测揭示木星极地大气温度异常，发现极地比赤道温暖6-7K，暗示内部热流增强，与高纬度雷暴活动一致。

The gravitational imprint of an interior-orbital resonance in Jupiter-Io

At mid-mission perijove 17, NASA's Juno mission has revealed a $7σ$ discrepancy between Jupiter's observed high-degree tidal response and the theoretical equilibrium tidal response, namely the Love number $k_{42}$. Here, we propose an interpretation for this puzzling disagreement based on an interior-orbital resonance between internal gravity waves trapped in Jupiter's dilute core and the orbital motion of Io. We use simple Jupiter models to calculate a fractional correction $Δk_{42}$ to the equilibrium tidal response that comes from the dynamical tidal response of a $g$-mode trapped in Jupite…

The lost meaning of Jupiter's high-degree Love numbers

NASA's Juno mission recently reported Jupiter's high-degree (degree $\ell$, azimuthal order $m$ $=4,2$) Love number $k_{42}=1.289\pm0.063$ ($1σ$), an order of magnitude above the hydrostatic $k_{42}$ obtained in a nonrotating Jupiter model. After numerically modeling rotation, the hydrostatic $k_{42}=1.743\pm0.002$ is still $7σ$ away from the observation, raising doubts about our understanding of Jupiter's tidal response. Here, we use first-order perturbation theory to explain the hydrostatic $k_{42}$ result analytically. We use a simple Jupiter equation of state ($n=1$ polytrope) to obtain th…