Solar Orbiter: Studies of Solar Wind Dynamics

这项研究将利用3个SWA传感器的测量结果，对太阳风粒子群的性质、热力学特性和可变性进行研究。首先，该项目将进行案例研究，通过对现场观测的分析确定等离子体种类的多变行为。通过多变指数，我们将描述在特定的太阳风结构的动力机制。此外，现有的数据将支持在所覆盖的日心距离上对太阳风热力学性质（多变行为及其与其他等离子体参数的相关性）的统计研究。这些研究将揭示太阳风等离子体在内日球层的演变。调查结果将与其他各特派团的观察结果进行比较（例如：g、Wind、Helios、帕克太阳探测器）。

The study will use measurements from the 3 SWA sensors to undertake studies of the nature of the solar wind particle populations, their thermodynamic properties and variability. At first, the project will carry out case studies, determining the polytropic behavior of plasma species from the analysis of in-situ observations. Through the polytropic index we will characterize the dynamic mechanisms in specific solar wind structures. Moreover, statistical studies of the Solar Wind thermodynamic properties (polytropic behavior and its correlation with other plasma parameters) over the covered heliocentric distance will be supported from the available data. Those studies will reveal the evolution of the solar wind plasma within the inner heliosphere. The results will be compared with observations by various other missions (e..g, Wind, Helios, Parker Solar Probe).