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SHINE Postdoc: Signatures of Heliospheric Topology

SHINE Postdoc: Signatures of Heliospheric Topology
SHINE博士后:日光层拓扑的特征
批准号:
0327739
负责人:
Nancy Crooker
金额:
$0.0万
依托单位国家:
美国
项目类别:
Continuing grant
财政年份:
2003
资助国家:
美国
项目状态:
已结题
起止时间:
2003-09-01 至 2005-08-31

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中文摘要
翻译
这项研究将集中在产生太阳风电子种群特征的物理现象上,通常被称为“热通量衰减”(HFD)。了解导致HFDs的原因很重要,因为磁场线与太阳分离的程度是一种诊断工具,能够区分在22年太阳活动周期中太阳磁场如何逆转的不同模型。将进行数据分析和理论课程。对Wind航天器HFD数据的调查将为太阳风结构背景下HFD频率和形态的统计研究提供基础。一项补充性的合作理论研究将解决HFDs的俯仰角各向同性是否归因于对等离子体β敏感的不稳定性,而不依赖于总通量的变化。
英文摘要
This study will focus on the physical phenomena that give rise to a signature in the population of solar wind electrons commonly referred to as a "heat flux dropout" (HFD). Understanding what causes HFDs is important because the degree to which magnetic field lines are disconnected from the sun is a diagnostic tool capable of distinguishing between competing models of how the sun's magnetic field reverses over the course of the 22-year solar cycle. A program of data analysis and theory will be performed. A survey of HFD data from the Wind spacecraft will provide a base for statistical studies of HFD frequency and morphology in the context of solar wind structures. A complementary collaborative theoretical study will address the question of whether pitch-angle isotropy in the HFDs is attributable to instabilities sensitive to the plasma beta, independent of variations in the total flux.
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SHINE: Studies of the Heliospheric Magnetic Field and Slow Solar Wind
  • 批准号:
    0962645
  • 项目类别:
    Standard Grant
  • 资助金额:
    $24.53万
  • 财政年份:
    2010
  • 负责人:
    Nancy Crooker
  • 依托单位:
International Heliophysical Year (IHY) Chapman Conference on Universal Heliophysical Processes; Savannah, Georgia; November 10-14, 2008
  • 批准号:
    0845554
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.0万
  • 财政年份:
    2008
  • 负责人:
    Nancy Crooker
  • 依托单位:
SHINE: Studies of ICME-CME Connections and Implications for Heliospheric Topology
  • 批准号:
    0553397
  • 项目类别:
    Continuing grant
  • 资助金额:
    $0.0万
  • 财政年份:
    2006
  • 负责人:
    Nancy Crooker
  • 依托单位:
Solar Wind Streamer Belt Morphology
  • 批准号:
    0119700
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.0万
  • 财政年份:
    2001
  • 负责人:
    Nancy Crooker
  • 依托单位:
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