An Innovative Approach to Probing Polar Coronal Holes: Simultaneous Observations with Fe IX 3801, Fe X 6374, Fe XI 7892, and Fe IV 5303 during Total Solar Eclipses

这项提议将研究太阳风源区域的形态和温度结构，这对于理解驱动这种等离子体流动的机制至关重要。PI将在日全食提供的独特日冕观测条件下以光谱线拍摄太阳图像。四个CCD相机将同时观测日冕；此外，PI将观测所有四个滤光片中连续测量的白光。通过这组光谱线，PI将识别形成日冕洞主体的冷物质和经常遮盖它们的周围地区的热物质之间的空间关系。这些观测还可以解决极地冕洞内不同温度等离子体的空间分布问题。利用CCD摄像机，PI将提供这些光谱线中的日冕洞的第一个同步光度图像。这项研究最终将建立一种探索冕洞结构的新工具。

This proposal will study the morphology and temperature structure of the source regions of solar wind, which are vital for understanding mechanisms that drive this plasma flow. The PI will make images of the Sun in spectral lines during the unique coronal observing conditions provided by total solar eclipse. Four CCD cameras will simultaneously observe the solar corona; in addition, the PI will observe white light from the continuum measurements in all four filters. With this set of spectral lines, the PI will identify the spatial relationship between the cool material forming the bulk of coronal holes, and the hot material from the surrounding regions that often veil them. These observations should also resolve spatial distribution of different temperature plasmas within polar coronal holes. With the CCD cameras, the PI will provide the first simultaneous photometric images of coronal holes in these spectral lines. This research will ultimately establish a new tool for exploring the structure of coronal holes.