Preconditioning the solar chromosphere: DKIST critical science

科罗拉多大学Daniel K. Inouye太阳望远镜（DKIST）关键科学项目的目标是了解声波在太阳低层大气中的作用。这个项目将研究这些波是如何被激发的，以及大气中的条件是如何改变动力学的。这将使用两种不同的代码进行研究，其结果将相互比较，并用于为NSF的DKIST设计一个实验。这个项目支持NSF的使命，即通过研究太阳的一个未被充分研究的层——色球层来促进科学的进步。更广泛的影响包括对研究生和早期职业科学家的支持。利用3D数据生成的外展讲座计划通过科罗拉多大学博尔德分校的公共讲座系列进行。研究结果也将提供给菲斯克天文馆和自然、环境、科学和技术工作室。该项目将使用DKIST观测的模拟和正演模型来检查声波在太阳色球层中的作用。两个三维辐射磁流体动力学代码MANCHA和Bifrost的结果将被检查，以确定声波激发事件和大气预处理如何改变色球的热力学和电离状态。将对结果进行观测意义评估，并构建DKIST特定观测的正演模型，以指导向DKIST提交观测提案的实验设计。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The goal of this Daniel K. Inouye Solar Telescope (DKIST) Critical Science project from the University of Colorado is to understand the role of sound waves on the lower atmosphere of the sun. This project will examine how the waves are excited and how the conditions in the atmosphere change the dynamics. This will be studied using two different codes, whose outcomes will be compared with each other and be used to design an experiment for NSF's DKIST. This project supports NSF's mission to promote the progress of science by examining an understudied layer of the sun - the chromosphere. The broader impacts include support for a graduate student and an early career scientist. Outreach talks using the 3D data generated are planned through CU Boulder's public talk series. The results would also be made available to the Fiske Planetarium and the Nature, Environment, Science & Technology studio. This project will use simulations and forward models of DKIST observations to examine the role of acoustic waves in the solar chromosphere. The results of two 3D radiative magnetohydrodynamic codes, MANCHA and Bifrost, will be examined to determine how acoustic wave excitation events and atmospheric preconditioning change the thermodynamics and ionization state of the chromosphere. The results will be assessed for observational implications and forward models of DKIST specific observations will be constructed to guide experiment design for an observing proposal to be submitted to DKIST.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.