Solar Orbiter: Studies of Solar Wind Dynamics

这项研究将使用来自3个SWA传感器的测量结果来研究太阳风粒子群的性质、它们的热力学性质和可变性。首先，该项目将进行案例研究，通过现场观测分析确定等离子体物种的多向性行为。通过多向性指数，我们将描述特定太阳风结构的动力机制。此外，在覆盖的日心距离上对太阳风热力学性质（多向性及其与其他等离子体参数的相关性）的统计研究将得到现有数据的支持。这些研究将揭示太阳风等离子体内部日球层的演变。这些结果将与其他各种任务的观测结果进行比较。g，风，太阳神，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).