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Space and planetary physics 2019-2022

空间和行星物理学 2019-2022

基本信息

批准号：
ST/S000364/1
负责人：
Timothy Horbury
金额：
$ 161.94万
依托单位：
Imperial College London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2019
资助国家：
英国
起止时间：
2019 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FS000364%2F1
关键词：
Space planetary physics 2019 2022

项目摘要

We will carry out a wide range of research projects which will answer important questions about our solar system and the planets within it. We will also study the links between the Sun and interplanetary space through the solar wind, as well as how they affect space around the Earth. Space is filled with small amounts of hot charged particles, called a plasma, along with a magnetic field, so much of the work we do is fundamental plasma physics applied to space and the processes that we study occur throughout the Universe.In our work we will study the fundamental plasma process of reconnection, which releases magnetic energy and is important in allowing plasma from the Sun, the solar wind, to enter near-Earth space. We will also use new data from spacecraft travelling close to the Sun to examine how fine scale structure on the Sun extends out into space. We will study how discrete releases of material from the Sun evolve as they travel into interplanetary space; when they reach the Earth, these objects can cause significant disruption to technological systems on the ground and in Earth orbit.We will also consider other bodies in the solar system, both small and large. We will continue to model the environment around comet 67P/Churyumov-Gerasimenko Gerasimenko in order to interpret the rich Rosetta dataset and use measurements of Saturn's magnetic field to probe its interior dynamics. We will consider how the planetary fields of Jupiter and Saturn link into the space around them, and model the interactions between the solar wind plasma and the outer gas giants Uranus and Neptune.These are important topics to study not just because they provide new insight into fundamental physical processes which we do not fully understand, but also because of their effects on our lives, on other areas of science and of what they tell us about our Universe. Our work on plasma physics is related to both laboratory work on the Earth as well as many astrophysical objects such as stars and the space between the galaxies. Our work on giant planets and moons helps us to better characterise the processes that occur on and around exoplanets. While we use theoretical models and computer simulations for some of our work, we also make extensive use of measurements returned from spacecraft in orbit around the Earth, around other planets and around the Sun. In many cases, these measurements are made wholly or in part by scientific instruments designed, built and operated by our laboratory here at Imperial College. London. Our expertise is in making instruments that measure the magnetic field in space - although it is very small, often hundreds of thousands of times smaller than the Earth's, this magnetic field is vital because it interacts with the charged particles in the plasma and it is this interaction that produces the broad range of behaviour that we observe. As part of this proposal, we will also improve on our magnetic field instrument designs, making them more stable and accurate for a future generation of scientific missions, to the outer planets and elsewhere in the Solar System.

我们将开展一系列广泛的研究项目，以回答有关太阳系及其行星的重要问题。我们还将研究太阳风与行星际空间之间的联系，以及它们如何影响地球周围的空间。空间充满了少量的热带电粒子，称为等离子体，沿着磁场，所以我们所做的大部分工作是应用于空间的基本等离子体物理学，我们研究的过程发生在整个宇宙中。在我们的工作中，我们将研究基本的等离子体重连过程，它释放磁能，对于允许来自太阳的等离子体，太阳风，进入近地空间我们还将使用来自靠近太阳的航天器的新数据来研究太阳上的精细尺度结构如何延伸到太空中。我们将研究来自太阳的离散物质在进入行星际空间时是如何演变的;当它们到达地球时，这些物体可能会对地面和地球轨道上的技术系统造成重大破坏。我们还将考虑太阳系中的其他天体，无论大小。我们将继续对彗星67 P/Churyumov-Gerasimenko Gerasimenko周围的环境进行建模，以解释丰富的Rosetta数据集，并使用土星磁场的测量来探测其内部动力学。我们将考虑木星和土星的行星场如何与周围的空间联系起来，并模拟太阳风等离子体与外层气体巨星天王星和海王星之间的相互作用。这些都是重要的研究课题，不仅因为它们为我们提供了对基本物理过程的新见解，我们还不完全了解，而且因为它们对我们生活的影响，其他科学领域以及它们告诉我们的关于宇宙的信息。我们在等离子体物理学方面的工作既与地球上的实验室工作有关，也与许多天体物理学对象有关，如恒星和星系之间的空间。我们在巨行星和卫星上的工作有助于我们更好地研究系外行星上及其周围发生的过程。虽然我们在一些工作中使用理论模型和计算机模拟，但我们也广泛使用从绕地球、绕其他行星和绕太阳轨道的航天器返回的测量结果。在许多情况下，这些测量全部或部分由我们在帝国理工学院的实验室设计，建造和操作的科学仪器进行。伦敦。我们的专业知识是制造测量太空磁场的仪器-尽管它非常小，通常比地球小几十万倍，但这个磁场至关重要，因为它与等离子体中的带电粒子相互作用，正是这种相互作用产生了我们观察到的广泛行为。作为这项提议的一部分，我们还将改进我们的磁场仪器设计，使它们更加稳定和准确，以便未来的科学任务，前往外行星和太阳系其他地方。

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）

Reconnection from a turbulence perspective

DOI：
10.1063/1.5128376
发表时间：
2019-11
期刊：
Physics of Plasmas
影响因子：
2.2
作者：
Subash Adhikari;M. Shay;T. Parashar;P. Pyakurel;W. Matthaeus;D. Godzieba;J. Stawarz;J. Eastwood;J. Dahlin
通讯作者：
Subash Adhikari;M. Shay;T. Parashar;P. Pyakurel;W. Matthaeus;D. Godzieba;J. Stawarz;J. Eastwood;J. Dahlin

Evidence for local particle acceleration in the first recurrent galactic cosmic ray depression observed by Solar Orbiter The ion event on 19 June 2020

太阳轨道飞行器观测到的第一次周期性银河系宇宙线凹陷中局部粒子加速的证据 2020 年 6 月 19 日的离子事件