Consolidated Grant in Solar Physics

太阳物理学综合资助

基本信息

  • 批准号:
    ST/P000533/1
  • 负责人:
  • 金额:
    $ 90.9万
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Research Grant
  • 财政年份:
    2017
  • 资助国家:
    英国
  • 起止时间:
    2017 至 无数据
  • 项目状态:
    已结题

项目摘要

The physics of plasmas - particularly plasmas permeated by a magnetic field - dictates the behaviour of much of the visible universe. Close at hand, we need to understand and measure plasmas, fields and particles understand the dynamic Sun and its interaction with the heliosphere. In this proposal we focus on several key unsolved problems in solar physics that are also prototypes for a wider and deeper understanding of cosmic plasmas as a whole. Our top-level questions are: how do high-energy radiating particles behave in solar flares and in interplanetary space? How are they accelerated, are they beamed and do they play a key role in flares and their terrestrial impact? How does the Sun store and release energy in its magnetised atmosphere, and what can we learn about this process by computer simulations and by studying the radiation that is emitted? The magnetic field is key to everything that happens in the Sun's atmosphere. Concentrated magnetic regions emerge through the Sun's surface and into its atmosphere. Here they interact with the pre-existing magnetic field and the result is intense bursts of energy known as flares, which accelerate sub-atomic particles (electrons and ions), cause heating to millions of degrees, and can also lead to expulsion of magnetised plasma into space, which can lead to damaging `space weather'. Flares have distinctive radiation signatures that are closely related to the structure of the magnetic field, and to the way that energy is transmitted along the magnetic field from the corona down to the solar surface and out into the distant heliosphere, and converted into other forms as it goes. By interpreting this radiation we can understand what is happening in a flare. More generally solar magnetic fields create eccentric and dynamic shapes in the solar atmosphere, for example swirling `tornado-like' structures in which the plasma, and perhaps the magnetic field supporting it, is rotating.Our programme combines observational data with theoretical and numerical modelling to address all of these topics, and spans a wide range of astronomical and technical problems, from the modeling of the path of radiation in a plasma to high-energy particle acceleration; from electromagnetic waves to relativistic particle beams; from image processing to statistical analysis of weak signals, and from mathematical `pen-and-paper' calculations to advanced numerical simulations. We will bring all these skills to bear on questions at the heart of current efforts to better understand our nearest star. Some aspects of our work will also help us to assess the potential threat of eruptions on the Sun, which is a key element of space weather forecasting.
等离子体的物理学--特别是被磁场渗透的等离子体--决定了可见宇宙的大部分行为。近在眼前,我们需要了解和测量等离子体,场和粒子了解动态太阳及其与日光层的相互作用。在这个提议中,我们专注于太阳物理学中几个关键的未解决的问题,这些问题也是更广泛和更深入地理解宇宙等离子体的原型。我们的首要问题是:高能辐射粒子在太阳耀斑和行星际空间中的行为如何?它们是如何被加速的,它们是否被发射,它们在耀斑及其对地球的影响中是否起着关键作用?太阳是如何在其磁化的大气层中储存和释放能量的,我们可以通过计算机模拟和研究发射的辐射来了解这个过程吗?磁场是太阳大气层中发生的一切的关键。集中的磁场区域穿过太阳表面进入大气层。在这里,它们与预先存在的磁场相互作用,结果是被称为耀斑的强烈能量爆发,它加速了亚原子粒子(电子和离子),导致数百万度的加热,还可能导致磁化等离子体被驱逐到太空中,这可能导致破坏性的“太空天气”。耀斑具有独特的辐射特征,与磁场的结构密切相关,也与能量从日冕沿着磁场向下传输到太阳表面并进入遥远的日球层并转换为其他形式的方式密切相关。通过解释这种辐射,我们可以了解耀斑中发生了什么。更一般地说,太阳磁场在太阳大气中产生偏心和动态形状,例如旋转的“龙卷风状”结构,其中等离子体,也许还有支撑它的磁场,正在旋转。我们的计划将观测数据与理论和数值模拟相结合,以解决所有这些主题,并涵盖广泛的天文和技术问题,从等离子体中辐射路径的建模到高能粒子加速;从电磁波到相对论粒子束;从图像处理到微弱信号的统计分析;从数学“纸笔”计算到高级数值模拟。我们将利用所有这些技能来解决当前努力的核心问题,以更好地了解我们最近的星星。我们工作的某些方面还将帮助我们评估太阳爆发的潜在威胁,这是空间气象预报的一个关键要素。

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)
Global Energetics of Solar Flares. VIII. The Low-energy Cutoff
  • DOI:
    10.3847/1538-4357/ab2cd4
  • 发表时间:
    2019-06
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M. Aschwanden;E. P. Kontar;N. Jeffrey
  • 通讯作者:
    M. Aschwanden;E. P. Kontar;N. Jeffrey
Spectro-imagery of an active tornado-like prominence: Formation and evolution
活跃的龙卷风突出物的光谱图像:形成和演化
  • DOI:
    10.1051/0004-6361/202140976
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    6.5
  • 作者:
    Barczynski K
  • 通讯作者:
    Barczynski K
Electron Acceleration during Macroscale Magnetic Reconnection
  • DOI:
    10.1103/physrevlett.126.135101
  • 发表时间:
    2021-03-30
  • 期刊:
  • 影响因子:
    8.6
  • 作者:
    Arnold, H.;Drake, J. F.;Shen, C.
  • 通讯作者:
    Shen, C.
Electron Distribution and Energy Release in Magnetic Reconnection Outflow Regions during the Pre-impulsive Phase of a Solar Flare
  • DOI:
    10.3847/1538-4357/ab01c9
  • 发表时间:
    2019-01
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M. Battaglia;E. P. Kontar;G. Motorina
  • 通讯作者:
    M. Battaglia;E. P. Kontar;G. Motorina
A Machine Learning Approach to Correcting Atmospheric Seeing in Solar Flare Observations
纠正太阳耀斑观测中大气视宁度的机器学习方法
  • DOI:
    10.48550/arxiv.2011.12814
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Armstrong J
  • 通讯作者:
    Armstrong J
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Lyndsay Fletcher其他文献

Modelling particle transport with stochastic simulations
  • DOI:
    10.1007/bf00749144
  • 发表时间:
    1994-05-01
  • 期刊:
  • 影响因子:
    7.400
  • 作者:
    Lyndsay Fletcher
  • 通讯作者:
    Lyndsay Fletcher
Cycle 23 Variation in Solar Flare Productivity
  • DOI:
    10.1007/s11207-013-0384-7
  • 发表时间:
    2013-09-04
  • 期刊:
  • 影响因子:
    2.400
  • 作者:
    Hugh Hudson;Lyndsay Fletcher;Jim McTiernan
  • 通讯作者:
    Jim McTiernan
Are coronal mass ejections caused by magnetic pumping?
  • DOI:
    10.1007/bf00190617
  • 发表时间:
    1996-12-01
  • 期刊:
  • 影响因子:
    2.400
  • 作者:
    Jan Kuijpers;Lyndsay Fletcher
  • 通讯作者:
    Lyndsay Fletcher
Electric Current Circuits in Astrophysics
  • DOI:
    10.1007/s11214-014-0041-y
  • 发表时间:
    2014-06-05
  • 期刊:
  • 影响因子:
    7.400
  • 作者:
    Jan Kuijpers;Harald U. Frey;Lyndsay Fletcher
  • 通讯作者:
    Lyndsay Fletcher

Lyndsay Fletcher的其他文献

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{{ truncateString('Lyndsay Fletcher', 18)}}的其他基金

Consolidated Grant in Solar Physics
太阳物理学综合资助
  • 批准号:
    ST/X000990/1
  • 财政年份:
    2023
  • 资助金额:
    $ 90.9万
  • 项目类别:
    Research Grant
Consolidated Grant in Solar Physics
太阳物理学综合资助
  • 批准号:
    ST/T000422/1
  • 财政年份:
    2020
  • 资助金额:
    $ 90.9万
  • 项目类别:
    Research Grant
Consolidated Grant in Solar and Plasma Astrophysics
太阳和等离子体天体物理学综合拨款
  • 批准号:
    ST/L000741/1
  • 财政年份:
    2014
  • 资助金额:
    $ 90.9万
  • 项目类别:
    Research Grant
Detector Development for the Advanced Technology Solar Telescope
先进技术太阳望远镜探测器的开发
  • 批准号:
    ST/L006200/1
  • 财政年份:
    2014
  • 资助金额:
    $ 90.9万
  • 项目类别:
    Research Grant
Rolling Programme in Solar and Plasma Astrophysics
太阳和等离子体天体物理学滚动计划
  • 批准号:
    ST/I001808/1
  • 财政年份:
    2011
  • 资助金额:
    $ 90.9万
  • 项目类别:
    Research Grant

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