The dynamics of Saturn's magnetosphere utilising Cassini magnetometer observations

利用卡西尼号磁力计观测土星磁层的动力学

• 批准号: 1708347
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1708347
• 关键词: dynamics; Saturn; magnetosphere; utilising; Cassini

The Cassini spacecraft went into orbit around Saturn in July 2004 and the mission has been extended until September 2017 when the spacecraft will, following close polar orbits of Saturn, dive into its atmosphere. We are the Principal Investigator institute for the Cassini magnetometer and utilise the magnetic field observations to better understand the dynamics of the magnetosphere, the variability of its boundaries (both bow shock and magnetopause) as well as the interaction of the magnetospheric plasma with the numerous moons in orbit around Saturn (such as Enceladus, Dione and Titan). This project will involve utilisation of magnetic field data from Cassini, in conjunction with data from other instruments on board, such as the plasma, energetic particle and radio wave instruments in order to study the fundamental plasma processes that occur within the magnetosphere, its dynamic boundaries and the moon-plasma interactions. Of particular interest will be the examination of the sources of plasma in the Saturnian magnetosphere, as well as the mechanisms involved in the transport of this plasma. These processes are thought to be unique to the Saturn system (because of the interactions mentioned above, as well as the contributions of the rings), making their investigation elsewhere impossible.

卡西尼号航天器于 2004 年 7 月进入土星周围轨道，任务已延长至 2017 年 9 月，届时航天器将沿着土星的近极轨道潜入土星大气层。我们是卡西尼号磁力计的首席研究员研究所，利用磁场观测更好地了解磁层的动力学、其边界的变化（弓激波和磁层顶）以及磁层等离子体与众多卫星的相互作用围绕土星的轨道（例如土卫二、土卫六和土卫六）。该项目将利用卡西尼号的磁场数据，结合船上其他仪器（例如等离子体、高能粒子和无线电波仪器）的数据，以研究磁层内发生的基本等离子体过程及其动态边界以及月等离子体相互作用。特别令人感兴趣的是对土星磁层中等离子体来源的检查，以及等离子体传输所涉及的机制。这些过程被认为是土星系统所独有的（由于上述相互作用以及土星环的贡献），使得他们在其他地方的调查变得不可能。

项目成果

Swept Forward Magnetic Field Variability in High-Latitude Regions of Saturn's Magnetosphere

土星磁层高纬度地区的前扫磁场变化

• DOI: 10.1002/2017ja024419
• 发表时间: 2017
• 期刊: Space Physics
• 作者: Davies E