报告开始:2021年07月10日 08:10(Asia/Shanghai)
报告时间:5min
所在会场:[SP] 张贴报告专场 [SP-9] 主题9、行星科学与空间物理 墙报
暂无文件
Large-scale electrical currents and Alfvénic waves are the two main drivers responsible for producing planetary aurorae. The relative contribution of each process is a central question in terrestrial auroral science, and poorly understood for other planets due to the relatively rare opportunity of in-situ spacecraft measurements. Here, we present observations of Jupiter's aurorae from the Hubble Space Telescope (HST) contemporaneous with Juno magnetometer measurements in the magnetosphere. For three successive days, we found that the magnetospheric ultralow-frequency (ULF) wave activity (with periods of 1–60 min) was correlated with auroral power. This was especially true for the Alfvénic modes. We further performed a statistical analysis based on HST visits during Juno's third and seventh orbit, which revealed a systematic correlation between ULF wave and auroral activity. Our results imply that Alfvénic wave power could be an important source in driving Jupiter's aurorae, as theoretically predicted.
07月09日
2021
07月11日
2021
摘要截稿日期
初稿截稿日期
提前注册日期
注册截止日期
报告提交截止日期
发表评论