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Magnetospheric Physics at Southampton

南安普顿磁层物理

基本信息

批准号：
ST/R000719/1
负责人：
Robert Fear
金额：
$ 37.17万
依托单位：
University of Southampton
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2018
资助国家：
英国
起止时间：
2018 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FR000719%2F1
关键词：
Magnetospheric Physics Southampton

项目摘要

This Consolidated Grant application proposes research which will be undertaken at the University of Southampton, into the responses of two planetary systems (the magnetospheres of Earth and Jupiter) to the solar wind.Our research into Earth's magnetosphere will address questions about the fundamental process that drives the interaction between the solar wind and the Earth's magnetic field, and why it appears to occur intermittently. We will do so by exploiting data from the newly-launched NASA mission MMS in order to probe signatures of this interaction in unprecedented detail, and to determine the physical processes controlling it. The nature of this interaction depends on the orientation of the interplanetary magnetic field, which is associated with the solar wind. This orientation is highly changeable, but can be referred to as 'northward' or 'southward'. We will use satellite observations to test mechanisms that have been advocated for previously observed complex structure in the magnetosphere during periods when the interplanetary magnetic field is 'northward', and to test whether (and under what conditions) state-of-the-art simulations reproduce such activity.With respect to Jupiter's magnetosphere, we will use powerful telescopes to image Jupiter's auroras at X-ray wavelengths. These "pictures" of the X-ray aurora will be compared with measurements by a spacecraft called Juno which is orbiting Jupiter and is sampling its magnetic environment. The combination of the X-ray observations and Juno measurements will allow us to link the physics of what causes the X-rays to local conditions in Jupiter's magnetosphere and in the solar wind. We want to understand what physical mechanisms drive Jupiter's X-ray auroras and why they sometimes appear to flash in a periodic way.

这项联合拨款申请提出了将在南安普顿大学进行的研究，研究两个行星系统（地球和木星的磁层）对太阳风的反应。我们对地球磁层的研究将解决驱动太阳风和地球磁场之间相互作用的基本过程的问题，以及为什么它似乎间歇性地发生。我们将利用NASA新发射的MMS任务的数据，以前所未有的细节探测这种相互作用的特征，并确定控制这种相互作用的物理过程。这种相互作用的性质取决于行星际磁场的方向，而行星际磁场与太阳风有关。这个方向是高度可变的，但可以被称为“向北”或“向南”。我们将使用卫星观测来测试先前在行星际磁场“向北”期间观测到的磁层复杂结构的机制，并测试最先进的模拟是否（以及在什么条件下）重现了这种活动。关于木星的磁层，我们将使用强大的望远镜在x射线波长下拍摄木星的极光。这些x射线极光的“照片”将与朱诺号宇宙飞船的测量结果进行比较，朱诺号宇宙飞船正在绕木星运行，并对其磁环境进行采样。x射线观测和朱诺号测量的结合将使我们能够将导致x射线的物理原因与木星磁层和太阳风的局部条件联系起来。我们想要了解驱动木星x射线极光的物理机制，以及为什么它们有时会以周期性的方式闪烁。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Exploring solar-terrestrial interactions via multiple imaging observers

DOI：
10.1007/s10686-021-09784-y
发表时间：
2021-08
期刊：
Experimental Astronomy
影响因子：
3
作者：
G. Branduardi‐Raymont;Matthieu Berthomier;Y. Bogdanova;J. Carter;M. R. Collier;A. Dimmock;Malcolm Dunlop;R. Fear;C. Forsyth;B. Hubert;E. Kronberg;K. Laundal;Mark Lester;S. Milan;K. Oksavik;N. Østgaard;M. Palmroth;F. Plaschke;F. Porter;I. J. Rae;A. Read;A. Samsonov;S. Sembay;Y. Shprits;D. Sibeck;Brian M. Walsh;M. Yamauchi
通讯作者：
G. Branduardi‐Raymont;Matthieu Berthomier;Y. Bogdanova;J. Carter;M. R. Collier;A. Dimmock;Malcolm Dunlop;R. Fear;C. Forsyth;B. Hubert;E. Kronberg;K. Laundal;Mark Lester;S. Milan;K. Oksavik;N. Østgaard;M. Palmroth;F. Plaschke;F. Porter;I. J. Rae;A. Read;A. Samsonov;S. Sembay;Y. Shprits;D. Sibeck;Brian M. Walsh;M. Yamauchi

RAS Specialist Discussion Meeting report

RAS专家讨论会报告