The Cryogenic Near-Infrared Spectropolarimeter (Cryo-NIRSP) is now conducting science operations at the National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST). We report results obtained during instrument commissioning that advance multiwavelength coronagraphic observations in the infrared. This includes the first observations of the Fe xiii 1075 nm, Fe xiii 1079 nm, Si x 1430 nm, and Si ix 3934 nm forbidden lines. The Si ix observations, in particular, significantly improve upon the few previous ground-based detections and open up this diagnostic for more routine study. We analyse long-slit spectra in each line sampling elongations from 1.06 to 1.52 solar radii above the northeast solar limb on 2022 February 14. Line characteristics as a function of radial distance are derived and discussed in comparison to modeled emission emergent from global coronal magnetohydrodynamic models with different heating prescriptions. We find favorable correspondence between the observations and different aspects of these models, and further demonstrate the utility of infrared observations for constraining coronal models. Continued DKIST/Cryo-NIRSP observations including polarimetric data, together with ongoing improvements in data calibrations, promise significant value for coronal studies.

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来自 DKIST/Cryo-NIRSP 的第一张红外日冕光谱：与全球 MHD 模型的比较

低温近红外分光偏振计 (Cryo-NIRSP) 目前正在美国国家科学基金会的 Daniel K. Inouye 太阳望远镜 (DKIST) 进行科学操作。我们报告了在仪器调试期间获得的结果，这些结果推进了红外线多波长日冕观测。这包括对 Fe 的首次观察十三1075 纳米，铁十三1079 纳米，硅X1430 纳米，硅九3934 nm 禁线。硅九尤其是观测，显着改进了以前的一些地面探测，并为更多的常规研究打开了这种诊断。我们分析了 2022 年 2 月 14 日东北太阳边缘上方 1.06 到 1.52 个太阳半径的每条线采样伸长率的长缝光谱。推导了作为径向距离函数的线特征，并与全球日冕磁流体动力学模型的模拟发射相比较进行了讨论具有不同的加热处方。我们发现观测结果与这些模型的不同方面之间存在良好的对应关系，并进一步证明了红外观测对约束日冕模型的效用。持续的 DKIST/Cryo-NIRSP 观测，包括极化数据，以及数据校准的持续改进，