Resolving the source of the solar acoustic oscillations: Preparing for the era of the Daniel K. Inouye Solar Telescope

类似于铃声，太阳表面一部分的激发可以引起声波穿过太阳内部并产生振动，这种振动可以在太阳表面的其他地方观察到。太阳科学家可以利用这些声波通过一种称为日震学的过程来探测太阳的内部深处。在像Daniel K. Inouye太阳望远镜（DKIST）这样的新型地面太阳望远镜能够观测到的非常小的尺度上，人们对这些声波的来源知之甚少。该提案将通过数值模拟来研究这些源的详细特性，并使用这些模型来预测通过望远镜观测将看到什么。拟议的研究将支持下一代太阳科学家的培训。PI和co-PI将共同指导两名研究生，每位学生将获得太阳现象理论、建模和观测方面的重要经验。本方案将通过理论建模和Dunn太阳望远镜（DST）观测相结合的方法来研究太阳声模态（p模态）。尽管利用p模通过日震学探测太阳内部，但太阳p模激发源的详细性质尚不清楚。提议者将开发详细的数值模拟来确定源激励机制并测试其效率。这些模拟将用于生成合成光谱，可以测试以确定它们对压力，温度和速度波动的敏感性。最后，DST观测将用于寻找谱线中这些热力学波动的预测特征。提案中概述的工作将为优化Daniel K. Inouye太阳望远镜（DKIST）的高空间和光谱分辨率能力提供必要的重要准备科学。

Similar to the ringing of a bell, excitations on one portion of the surface of the Sun can cause sound (acoustic) waves to travel through the interior of the Sun and generate vibrations that can be observed elsewhere on the solar surface. Solar scientists can use these acoustic waves to probe the deep interior of the Sun through a process called helioseismology. At the very small size scales that new ground-based solar telescopes such as the Daniel K. Inouye Solar Telescope (DKIST) will be able to observe, little is known about the sources of these acoustic waves. This proposal will investigate the detailed properties of these sources by numerically modeling them and using these models to predict what will be seen through telescope observations. The proposed research will support the training of the next generation of solar scientists. The PI and co-PI will jointly mentor two graduate students, with each student gaining critical experience in the theory, modeling and observation of solar phenomena. This proposal will investigate solar acoustic modes (p-modes) through a combination of theoretical modeling and observation with the Dunn Solar Telescope (DST). Despite the use of p-modes to probe the interior of the Sun through helioseismology, the detailed properties of the sources of solar p-mode excitation are not well known. The proposers will develop detailed numerical simulations to determine the source excitation mechanisms and test their efficiencies. These simulations will be used to generate synthetic spectra, which can be tested to determine their sensitivity to pressure, temperature and velocity fluctuations. Finally, observations with the DST will be used to search for the predicted signatures of these thermodynamic fluctuations in the spectral lines. The work outlined in the proposal will provide important preparatory science necessary to optimize the high spatial and spectral resolution capabilities of the Daniel K. Inouye Solar Telescope (DKIST).