论文标题
帕克太阳能探针在0.17至0.7 au之间观察到的慢性太阳风的能源供应
Energy Supply for Heating the Slow Solar Wind Observed by Parker Solar Probe between 0.17 and 0.7 au
论文作者
论文摘要
慢性太阳风中加热过程的能源源尚不清楚。帕克太阳能探测器（PSP）任务提供了一个很好的机会来研究此问题。最近，PSP的观察结果发现，缓慢的太阳风经历了0.24 au内部更强的加热。在这里，我们第一次在慢速风中测量磁性痕量功率谱上低频断裂的径向梯度，并评估相关的能源供应速率。我们发现能源供应速率与根据磁矩的梯度计算的观察到的垂直加热率一致。基于这一发现，人们可以解释为什么在0.25 au内强烈加热慢的太阳风，但在0.25 au之外几乎绝热地扩展。这一发现支持这样一个概念，即通过能量级联进程将含能量范围的能量转移到耗散范围，然后消散以加热慢速太阳风。讨论了进一步研究的相关问题。
Energy supply sources for the heating process in the slow solar wind remain unknown. The Parker Solar Probe (PSP) mission provides a good opportunity to study this issue. Recently, PSP observations have found that the slow solar wind experiences stronger heating inside 0.24 au. Here for the first time we measure in the slow solar wind the radial gradient of the low-frequency breaks on the magnetic trace power spectra and evaluate the associated energy supply rate. We find that the energy supply rate is consistent with the observed perpendicular heating rate calculated based on the gradient of the magnetic moment. Based on this finding, one could explain why the slow solar wind is strongly heated inside 0.25 au but expands nearly adiabatically outside 0.25 au. This finding supports the concept that the energy added from the energy-containing range is transferred by an energy cascade process to the dissipation range, and then dissipates to heat the slow solar wind. The related issues for further study are discussed.
