This paper is a follow up of the article where Lemaire and Stegen (Solar Phys. 291(12), 3659, 2016) introduced their DYN method to calculate coronal temperature profiles from given radial distributions of the coronal and solar wind (SW) electron densities. Several such temperature profiles are calculated and presented corresponding to a set of given empirical density models derived from eclipse observations and in-situ measurements of the electron density and bulk velocity at 1 AU. The DYN temperature profiles obtained for the equatorial and polar regions of the corona challenge the results deduced since 1958 from singular hydrodynamical models of the SW. In these models—where the expansion velocity transits through a singular saddle point—the maximum coronal temperature is predicted to be located at the base of the corona, while in all DYN models the altitude of the maximum temperature is found at significantly higher altitudes in the mid-corona. Furthermore, the maximum of the DYN-estimated temperatures is found at much higher altitudes over the polar regions and coronal holes, than over the equator. However, at low altitudes, in the inner corona, the DYN temperatures are always smaller at high latitudes, than at low equatorial latitudes. This appears well in agreement with existing coronal hole observations. These findings have serious implications on the open questions: what is the actual source of the coronal heating, and where is the maximum energy deposited within the solar corona?

本文是按照文章的地方了勒梅尔和Stegen（太阳物理学。291（12），3659，2016）引入了他们的DYN方法，根据给定的日冕和太阳风（SW）电子密度的径向分布来计算日冕温度分布。计算并给出了几种这样的温度曲线，对应于一组给定的经验密度模型，该模型是从日食观测和在1 AU时电子密度和体速度的原位测量得出的。从电晕的奇异水动力模型推导出自1958年以来得出的结果，对电晕赤道和极地区域获得的DYN温度曲线提出了挑战。在这些模型中-膨胀速度穿过奇异的鞍点-最高日冕温度预计位于日冕的底部，而在所有DYN模型中，最高温度的高度都位于日冕中部明显更高的高度。此外，在极区和日冕孔上方的海拔高度上，发现的DYN估计温度最大值高于在赤道上方。但是，在低海拔地区，在内部电晕中，与低赤道纬度地区相比，高纬度地区的DYN温度始终较低。这似乎与现有的冠状孔观测非常吻合。这些发现对以下悬而未决的问题产生了严重的影响：日冕加热的真正来源是什么，太阳日冕内沉积的最大能量在哪里？但是，在低海拔地区，在内部电晕中，与低赤道纬度地区相比，高纬度地区的DYN温度始终较低。这似乎与现有的冠状孔观测非常吻合。这些发现对以下悬而未决的问题产生了严重的影响：日冕加热的真正来源是什么，太阳日冕内沉积的最大能量在哪里？但是，在低海拔地区，在内部电晕中，与低赤道纬度地区相比，高纬度地区的DYN温度始终较低。这似乎与现有的冠状孔观测非常吻合。这些发现对以下悬而未决的问题产生了严重的影响：日冕加热的真正来源是什么，太阳日冕内沉积的最大能量在哪里？