The EUV Unresolved Corona
The EUV Unresolved Corona
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EUV 未解决的新冠问题
DOI：
10.1007/s11207-006-0035-3
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发表时间：
2006
期刊：
影响因子：
2.8
通讯作者：
M. Weber
中科院分区：
文献类型：
--
作者：
J. Cirtain;P. Martens;L. Acton;M. Weber
研究了日冕上方三个活动区(ARs)的未分辨日冕。在1mK以上形成的离子的测量强度是太阳表面上方高度的函数。观测到的强度随高度的减小被发现以指数的方式最好地拟合。此外，这种指数下降大约是流体静力平面几何大气预期的排放下降，其中尺度高度温度取决于AR的动态。对于所分析的两个AR，我们发现由指数拟合得到的最佳拟合温度与等温流体静力未分辨日冕一致。
The unresolved corona for three active regions (ARs) above the solar limb is investigated. Intensities measured for ions formed above 1 MK are presented as a function of height above the solar surface. The observed decrease in intensity with altitude is found to be best fit by an exponential. Furthermore, this exponential decrease is approximately the decrease in emission expected for a hydrostatic planar geometry atmosphere, where the scale height temperature is dependent on the dynamics of the AR. For two of the ARs analyzed, we have found that the best-fit temperature derived from the exponential fits is consistent with an isothermal hydrostatic unresolved corona.