SHINE: Solar Energetic Particles Mediating Interplanetary Shocks Close to the Sun

闪耀:太阳高能粒子介导靠近太阳的行星际激波

基本信息

  • 批准号:
    2401162
  • 负责人:
  • 金额:
    $ 57.97万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2024
  • 资助国家:
    美国
  • 起止时间:
    2024-03-01 至 2027-02-28
  • 项目状态:
    未结题

项目摘要

Solar energetic particles (SEPs) are high-energy particles that can propagate from the Sun all the way to the surface of the Earth, which can cause significant disruptions to communication systems. Their generation mechanisms remain a subject of much debate, with strong coronal and interplanetary discontinuities or shocks driven by coronal mass ejections (CME) being likely responsible. Previous observations studied these shocks at different solar distances from the Earth’s orbit to the outer heliosphere, but were limited to distances mostly outside the Earth’s orbit (1 au). Currently, however, observations with Parker Solar Probe (PSP) and Solar Orbiter (SolO) allow us to build a more complete picture by probing extensively distances below 1 au. A key consequence of studying this region, which is the goal of this project, is that these in-situ observations will provide SEP and shock measurements that are dramatically less affected by transport effects as the spacecraft progressively get closer to the Sun.The data from PSP and SolO will be analyzed for periods when these spacecraft observe shock events with exceptionally high SEP intensities. The results will address the significant issue of energetic particle acceleration by shocks near the Sun and how the particles affect the structure of these young shocks. Additionally, as energetic-particle-mediated shocks are predicted to occur in various astrophysical settings across a broad range of spatial and temporal scales, our comprehensive search for such structures very close to our Sun may fundamentally contribute to our understanding of well-known ‘cosmic ray’-mediated collisionless shocks. The science goals of this project are to (1) quantify SEP-mediated shocks, (2) assess SEP impact on shock mediation, and (3) explore shock-SEP relationships. This project will support an early-career female scientist and an undergraduate student from the APL CIRCUIT Program to work on this project which will be promoting research and education.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
太阳能颗粒(SEP)是高能颗粒,可以从太阳一直传播到地球表面,这可能会对通信系统造成严重的破坏。他们的生成机制仍然是一个众多争论的主题,具有强烈的冠状动脉和星际间的不连续性或由冠状动脉质量弹出(CME)驱动的冲击。先前的观察结果研究了这些冲击在从地球轨道到外气球的不同太阳距离上进行的,但仅限于地球轨道之外的距离(1 AU)。但是,目前,Parker太阳能探针(PSP)和太阳轨道(SOLO)的观察使我们能够通过探测以下1 au以下的距离来构建更完整的图片。 A key consequence of studying this region, which is the goal of this project, is that these in-situ observations will provide SEP and shock measurements that are dramatically Less affected by transport effects as the spacecraft progressively get closer to the Sun.The data from PSP and SolO will be analyzed for periods when these spacecraft observe shock events with exceptionally high SEP intensities.结果将解决通过太阳附近的冲击以及颗粒如何影响这些年轻冲击的结构的重大问题。此外,由于预计在各种空间和临时尺度的各种天体物理环境中都会发生能量粒子介导的冲击,因此我们对这种结构非常接近太阳的全面搜索可能从根本上有助于我们对众所周知的“宇宙射线”介导的无碰撞冲击。该项目的科学目标是(1)量化SEP介导的冲击,(2)评估SEP对冲击中介的影响,以及(3)探索冲击性关系。该项目将支持APL巡回赛计划的早期女性科学家和一名本科生,以促进研究和教育。该奖项反映了NSF的法定任务,并被认为是通过基金会的智力优点和更广泛影响的评估标准来通过评估来获得的支持。

项目成果

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SHINE: Understanding the Impact of Solar Energetic Particles and Forbush Decreases on the Global Electric Circuit
SHINE:了解太阳能高能粒子和福布什减少对全球电路的影响
  • 批准号:
    2301365
  • 财政年份:
    2023
  • 资助金额:
    $ 57.97万
  • 项目类别:
    Continuing Grant
Collaborative Research: SHINE: Characteristics of Solar Energetic Particle Events Resulting from Filament Eruptions
合作研究:SHINE:灯丝喷发引起的太阳能高能粒子事件的特征
  • 批准号:
    1621247
  • 财政年份:
    2016
  • 资助金额:
    $ 57.97万
  • 项目类别:
    Continuing Grant
Collaborative Research: SHINE: Characteristics of Solar Energetic Particle Events Resulting from Filament Eruptions
合作研究:SHINE:灯丝喷发引起的太阳能高能粒子事件的特征
  • 批准号:
    1622377
  • 财政年份:
    2016
  • 资助金额:
    $ 57.97万
  • 项目类别:
    Continuing Grant
Collaborative Research: SHINE: Characteristics of Solar Energetic Particle Events Resulting from Filament Eruptions
合作研究:SHINE:灯丝喷发引起的太阳能高能粒子事件的特征
  • 批准号:
    1622437
  • 财政年份:
    2016
  • 资助金额:
    $ 57.97万
  • 项目类别:
    Continuing Grant
SHINE: Understanding Multi-spacecraft Observations of Solar Energetic Particle Events in Terms of Global Disturbances in the Solar Corona and Heliospheric Magnetic Field Connection
SHINE:从日冕和日光层磁场连接的全球扰动角度理解太阳高能粒子事件的多航天器观测
  • 批准号:
    1259549
  • 财政年份:
    2013
  • 资助金额:
    $ 57.97万
  • 项目类别:
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