SHINE Postdoc: Signatures of Heliospheric Topology

这项研究将集中在引起太阳风电子种群中的特征的物理现象上，通常被称为“热流丢失”(HFD)。理解引起高频辐射的原因很重要，因为磁力线与太阳断开的程度是一种诊断工具，能够区分出太阳磁场在22年太阳周期中如何逆转的相互竞争的模型。将进行数据分析和理论程序。对来自Wind航天器的高频辐射数据的调查将为太阳风结构背景下高频辐射频率和形态的统计研究提供基础。一项补充的合作理论研究将解决以下问题：HFD中的俯仰角各向同性是否可归因于对血浆β敏感的不稳定，而与总通量的变化无关。

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.