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Space and planetary physics

空间和行星物理学

基本信息

批准号：
ST/N000692/1
负责人：
Timothy Horbury
金额：
$ 247.36万
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：
2016
资助国家：
英国
起止时间：
2016 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FN000692%2F1
关键词：
Space planetary physics

项目摘要

We propose to carry out a broad series 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.In our work we will study some fundamental processes that occur in plasmas, including the release of magnetic energy by reconnection and the acceleration of particles at shock waves. We will look at how the solar wind is created by the Sun and how it evolves towards the Earth, as well as how different monitoring locations can be used to predict conditions at Earth. We will pursue our quantitative assessment of the plasma processes and complexity at comet 67P/Churyumov-Gerasimenko, linking our models with data from the Rosetta spacecraft flying alongside. We will use data from the Cassini spacecraft as it travels closer to Saturn than ever before to learn about the giant planet's internal magnetic field. We will study the magnetic field of the smallest planet in the solar system, Mercury, as well as considering how energy is transferred from the solar wind to the giant planets and how this is different from the Earth.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. In all this work we will use theoretical models and computer simulations as well as measurements from spacecraft in deep space or in orbit around planets. In many of these cases, the measurements are made by instruments that we have built here at Imperial College. Most of these measure the magnetic field in space. The magnetic field is important in all plasmas, and space is filled with plasma - but it is also important in telling us about the interiors of planets and moons. Measuring the magnetic fields in space is very difficult because they are so small, so our science is greatly helped by working closely with the engineers who design, build and run the instruments. As part of this proposal, we will also develop the next generation of miniature magnetic field instruments, which we hope to fly on future, small missions around the Earth or other planets. This development is important so that we can take advantage of new technologies that have become available to make the smallest, lightest, lowest power and most accurate instruments possible. In this way, we lay the groundwork for the science of the future.

我们建议开展一系列广泛的研究项目，这些项目将回答有关太阳系及其内行星的重要问题。我们还将通过太阳风研究太阳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。太空中充满了少量的热带电粒子（称为等离子体）和磁场，因此我们所做的大部分工作是将基础等离子体物理应用于太空。在我们的工作中，我们将研究等离子体中发生的一些基本过程，包括通过重新连接释放磁能以及冲击波下粒子的加速。我们将研究太阳风是如何由太阳产生的以及它如何向地球演化，以及如何使用不同的监测位置来预测地球的状况。我们将对 67P/Churyumov-Gerasimenko 彗星的等离子体过程和复杂性进行定量评估，将我们的模型与沿其飞行的罗塞塔航天器的数据联系起来。我们将使用卡西尼号太空船比以往任何时候都更接近土星时获得的数据来了解这颗巨行星的内部磁场。我们将研究太阳系中最小行星水星的磁场，并考虑能量如何从太阳风转移到巨型行星，以及它与地球有何不同。这些都是重要的研究课题，不仅因为它们为我们不完全理解的基本物理过程提供了新的见解，而且因为它们对我们的生活、其他科学领域以及它们告诉我们关于宇宙的影响。我们在等离子体物理学方面的工作与地球上的实验室工作以及许多天体物理物体（例如恒星和星系之间的空间）有关。我们在巨行星和卫星上的工作有助于我们更好地描述系外行星上及其周围发生的过程。在所有这些工作中，我们将使用理论模型和计算机模拟以及深空或行星轨道航天器的测量结果。在许多情况下，测量是通过我们在帝国理工学院建造的仪器进行的。其中大多数测量太空磁场。磁场在所有等离子体中都很重要，而且太空中充满了等离子体，但它对于告诉我们行星和卫星的内部结构也很重要。测量太空中的磁场非常困难，因为它们太小了，因此与设计、建造和运行仪器的工程师密切合作，我们的科学得到了极大的帮助。作为该提案的一部分，我们还将开发下一代微型磁场仪器，我们希望在未来围绕地球或其他行星的小型任务中飞行。这一发展非常重要，这样我们就可以利用现有的新技术来制造最小、最轻、功耗最低和最准确的仪器。通过这种方式，我们为未来的科学奠定了基础。

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

The Structure of Planetary Period Oscillations in Saturn's Equatorial Magnetosphere: Results From the Cassini Mission

土星赤道磁层中行星周期振荡的结构：卡西尼号任务的结果