RUI: Imaging and Spectra at the 2023 and 2024 Total Solar Eclipses

RUI：2023 年和 2024 年日全食的成像和光谱

• 批准号: 2225960
• 负责人: Jay Pasachoff
• 金额: $ 37.73万
• 依托单位: Williams College
• 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: 2023-01-01 至 2025-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2225960&HistoricalAwards=false
• 关键词: RUI; Imaging; Spectra; 2023; 2024

A thorough understanding of the solar corona remains one of the most important areas in solar research. Studies of the solar corona during solar eclipses have been a major part of the success of the Williams College astronomy department in attracting and training students. This project continues solar eclipse studies with unique, ground-based measurements in concert with space-based and ground-based radio observations from NSF-funded telescopes. Undergraduate students, including students from under-represented groups in STEM, will be trained and participating in observations of two solar eclipses.The solar eclipse observations include exquisitely high-resolution observations with a Fabry-Perot and with Lyot/Halle filters. Observations also include high-frequency ( 1 Hz) power spectra of narrow-band coronal loops to compare mechanisms of coronal heating. Spectrographic observations continue to study changes of the spectral-line ratios over the solar-activity cycle through the predicted 2024 low maximum, comparing with previous solar-minimum observations from this group. Additionally, radio observations will be make with the NSF-funded Jansky Very Large Array, to provide the best-ever mapping of active regions to pinpoint the different locations of radio and EUV eruption origins, and Owens Valley Radio Observatory and a radiotelescope in the Apple Valley. The aim is to study differences in the corona during solar minimum and solar maximum.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.

透彻地了解日冕仍然是太阳研究中最重要的领域之一。在日食期间对日冕的研究一直是威廉姆斯学院天文系在吸引和培养学生方面取得成功的主要部分。该项目继续进行日食研究，采用独特的地面测量方法，配合由nsf资助的望远镜进行的天基和地面射电观测。本科生，包括来自STEM中代表性不足群体的学生，将接受培训并参与两次日食的观测。日食观测包括使用Fabry-Perot和Lyot/Halle滤光片进行精确的高分辨率观测。观测还包括窄带日冕环的高频（1hz）功率谱，以比较日冕加热的机制。通过预测2024年太阳极小期，光谱观测继续研究太阳活动周期中光谱线比的变化，并与该小组之前的太阳极小期观测结果进行比较。此外，无线电观测将由美国国家科学基金会资助的Jansky甚大阵列进行，以提供有史以来最好的活跃区域地图，以确定无线电和EUV爆发起源的不同位置，欧文斯谷射电天文台和苹果谷的射电望远镜。目的是研究太阳极小期和太阳极大期日冕的差异。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。