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

对太阳黑子半影及其附近小型喷流的研究：早期 DKIST 科学

• 批准号: 2307505
• 负责人: Sanjiv Tiwari
• 金额: $ 47.32万
• 依托单位: Bay Area Environmental Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2307505&HistoricalAwards=false
• 关键词: Investigation; Small; scale; Jets; Near

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.

这个项目来自海湾地区环境研究所（BAERI）和亨茨维尔的亚拉巴马大学，旨在分析国家科学基金会（NSF）的丹尼尔K。Inouye太阳望远镜（DKIST）。这种不同波长的最高分辨率数据为探索太阳黑子中的喷流和点的动态提供了独特的机会。提高对离我们最近的星星-太阳-上最强磁场区域的精细尺度动力学的理解，具有广泛的社会影响。大规模的特征，如日冕喷流和日冕物质抛射，这是空间天气的原因。小尺度特征，如本研究中所研究的那些，与大尺度结构有一些相似之处，但也有助于太阳环境的复杂性。该项目的更广泛的影响包括培训REU学生和高中实习生，他们不仅将被介绍给太阳物理学研究，而且还可以激励他们在任何科学领域从事职业生涯。拟议的工作还将增加三个机构之间的伙伴关系，BAERI，亚拉巴马大学，亨茨维尔，和国家太阳天文台。具体来说，该项目旨在利用数据从日出的太阳光学望远镜，美国宇航局的界面区域成像光谱仪（IRIS），和DKIST结合MHD模拟太阳黑子半暗带到（i）了解在太阳黑子半影内和周围产生喷流和亮点的机制，（ii）调查半影喷流在多大程度上有助于过渡区和日冕加热，（iii）调查半影喷流的底部是否有混合极性场，该奖项反映了NSF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。