MRI: Development of an Airborne Coronal Emission Surveyor (ACES)

MRI：机载日冕发射测量仪 (ACES) 的开发

• 批准号: 2117582
• 负责人: Jenna Samra
• 金额: $ 98.99万
• 依托单位: Smithsonian Institution Astrophysical Observatory
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2117582&HistoricalAwards=false
• 关键词: MRI; Development; Airborne; Coronal; Emission

The Airborne Coronal Emission Surveyor (ACES) will be developed as a new imaging Fourier transform spectrometer to observe the solar corona from the NSF Gulfstream V during the 2024 total solar eclipse across North America. ACES will observe the 1-4 micron wavelength region to understand the coronal magnetic field and coronal plasma at large solar radii. Additionally, the project will engage undergraduate students in research. The team will also conduct English-Spanish bilingual outreach events in conjunction with the 2024 total solar eclipse.ACES is a new focal plane instrument enabled by the Airborne Stabilized Platform for InfraRed Experiments (ASPIRE). ACES will survey the corona in a new wavelength region as a function of solar conditions and radius, expanding the team’s successful mid-infrared coronal program. It will observe neutral helium as well as 18 forbidden lines of ionized magnesium, silicon, sulfur, argon, calcium, and iron, and will search for weaker lines as further diagnostics. Half of the ACES coronal lines have not been observed before. These measurements will allow for improved atomic physics modeling of the solar corona. ACES will provide unprecedented infrared plasma diagnostics in the inner and mid-corona. The coronal lines cover a temperature range of 0.4 to 3.2 MK, including four density-sensitive line pairs at different temperatures. ACES will also make a precise measurement of the continuum, allowing for measurement of coronal abundance of high-FIP (sulfur and argon) vs. low FIP-elements.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.

机载日冕发射测量仪 (ACES) 将被开发为新型成像傅立叶变换光谱仪，用于在 2024 年北美日全食期间从 NSF Gulfstream V 观测日冕，以了解 1-4 微米波长区域的情况。此外，该项目还将让本科生参与研究，同时开展英语-西班牙语双语推广活动。 2024 年日全食。ACES 是一种由机载稳定红外实验平台 (ASPIRE) 启用的新型焦平面仪器，它将根据太阳条件和半径在新的波长区域中测量日冕，从而扩大团队的成功。中红外日冕计划将观测中性氦以及电离镁、硅、硫、氩、钙和铁的 18 条禁线。寻找较弱的谱线作为进一步的诊断。这些测量将有助于改进日冕的原子物理模型，从而提供前所未有的日冕内部和中部的红外等离子体诊断。线覆盖 0.4 至 3.2 MK 的温度范围，包括不同温度下的四个密度敏感线对，ACES 还将对连续体进行精确测量，从而可以测量日冕丰度。高 FIP（硫和氩）与低 FIP 元素。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。