论文标题
通过弱和局部制定的政治局势法律测量的内部太阳风中的能源转移，不连续性和供暖
Energy transfer, discontinuities and heating in the inner solar wind measured with a weak and local formulation of the Politano-Pouquet law
论文作者
论文摘要
太阳风是一种高度动荡的等离子体，使用Politanao-Pouquet（PP98）精确定律，已经长时间测量了平均能量转移$ \ VAREPSILON $的等离子体。但是，该法律假定存在不连续性可能违反的统计同质性。在这里，我们介绍了一种基于惯性耗散$ \ dis $的新方法，该方法的分析形式来自不可压缩的磁性水力动力学（MHD）；它可以被视为弱的，{\ it local}（在太空中）PP98定律的公式，其表达在集成之后被恢复为空间。我们使用$ \ dis $来估算从\ textit {themis-b}和\ textit {parker solar probe}（psp）在太阳能中获取的数据的局部能量传输速率。我们的研究表明，太阳附近的不连续性导致强大的能量转移，影响了广泛的尺度$σ$。我们还观察到，折返似乎具有奇异行为的特征，其能量传递的变化为$σ^{ - 3/4} $，这与以$σ^{ - 1} $缩放为特征的经典不连续性略有不同。 $ \ varepsilon $和$ \ dis $的测量值之间的比较表明，后者通常大于前者。
The solar wind is a highly turbulent plasma for which the mean rate of energy transfer $\varepsilon$ has been measured for a long time using the Politano-Pouquet (PP98) exact law. However, this law assumes statistical homogeneity that can be violated by the presence of discontinuities. Here, we introduce a new method based on the inertial dissipation $\Dis$ whose analytical form is derived from incompressible magnetohydrodynamics (MHD); it can be considered as a weak and {\it local} (in space) formulation of the PP98 law whose expression is recovered after integration is space. We used $\Dis$ to estimate the local energy transfer rate from the \textit{THEMIS-B} and \textit{Parker Solar Probe} (PSP) data taken in the solar wind at different heliospheric distances. Our study reveals that discontinuities near the Sun lead to a strong energy transfer that affects a wide range of scales $σ$. We also observe that switchbacks seem to be characterized by a singular behavior with an energy transfer varying as $σ^{-3/4}$, which slightly differs from classical discontinuities characterized by a $σ^{-1}$ scaling. A comparison between the measurements of $\varepsilon$ and $\Dis$ shows that in general the latter is significantly larger than the former.
