Investigation of Small-scale Jets In and Near Sunspot Penumbrae: Early DKIST Science

这个项目来自湾区环境研究所(Baeri)和阿拉巴马大学亨茨维尔分校，旨在分析美国国家科学基金会(NSF)的丹尼尔·K·井上太阳望远镜(DKIST)对太阳黑子的观测。这一不同波长的最高分辨率数据为探索太阳黑子中喷流和黑子的动力学提供了一个独特的机会。提高对距离我们最近的恒星太阳上最强磁场区域的精细动力学的理解，具有广泛的社会影响。造成空间天气的大尺度特征，如日冕喷流和日冕物质抛射。小尺度特征，如本研究中考察的特征，与大尺度结构有一些相似之处，但也导致了太阳环境的复杂性。该项目的更广泛影响包括培训REU学生和高中实习生，他们不仅将被介绍给太阳物理研究，而且还可以受到激励，在任何科学领域从事职业。这项拟议的工作还将加强三个机构，Baeri，阿拉巴马大学，亨茨维尔，和国家太阳天文台之间的合作。具体地说，这个项目试图利用来自Hinode的太阳光学望远镜，NASA的界面区域成像光谱仪(IRIS)和DKIST的数据，并结合对太阳黑子半影的MHD模拟来(I)了解在太阳黑子半影及其周围产生喷流和亮点的机制，(Ii)调查半影喷流对过渡区和日冕加热的贡献程度，以及(Iii)调查半影喷流在其底部是否具有混合极性的场，以及它们是否自旋、自旋、自转、旋转和旋转这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This project from the Bay Area Environmental Research Institute (BAERI) and the University of Alabama, Huntsville seeks analyze observations of sunspots from National Science Foundation’s (NSF’s) Daniel K. Inouye Solar Telescope (DKIST). This highest ever-resolution data in different wavelengths offers a unique opportunity to explore dynamics of jets and dots in sunspots. Improving understanding of fine-scale dynamics in the strongest magnetic field regions on our nearest star, the Sun, has broad social impact. Large scale features such as coronal jets and coronal mass ejections, which are responsible for space weather. Small-scale features, such as those examined in this study, have some similarities to large scale structures, but also contribute to the complexity of the solar environment. The broader impacts of this project include training REU students, and high school interns, who will not only be introduced to solar physics research but can also get motivated to pursue a career in any science. The proposed work will also increase the partnership between three institutions, BAERI, University of Alabama, Huntsville, and the National Solar Observatory.Specifically, this project seeks to utilize data from Hinode’s Solar Optical Telescope, NASA’s Interface Region Imaging Spectrograph (IRIS), and DKIST in combination with MHD simulations of sunspot penubrae to (i) understand the mechanisms that generate jets and bright dots in and around sunspot penumbrae, (ii) investigate to what extent penumbral jets contribute to transition region and coronal heating, and (iii) investigate whether penumbral jets have mixed-polarity field at their base, and whether they spin, similar to X-ray jets.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.