CEDAR: Quantitiative Assessment of Proton Aurora Using State-of-the-art Models

这是一个为期3年的观测和模拟研究项目，旨在表征从地面宽场光谱观测到的氢发射的入射高能质子，即所谓的质子极光。建模工作将综合质子传输代码和辐射传输模式，以评估来自附近质子极光的H Balmer多普勒轮廓的污染。将部署两台高分辨率(0.1纳米)成像光谱仪(CESAR和HiTIES)，首先在Poker Platform，然后相距325公里，来自这些成像光谱仪的数据将与Poker Flat非相干散射雷达(PFISR)以及PFISR设施光谱仪的测量结果相结合，以验证理论预测。这将使我们能够准确地从H-多普勒谱中得出入射质子的平均能量和能流，这一结果将得到补充射电和天基观测的验证。具体来说，改进后的分析技术将被用来量化进入的质子在活动期间(如亚暴期间)的能量变化。该研究项目将主要由博士后研究员与具有广泛专业知识的国际资深科学家团队合作并在其指导下进行。一个由来自美国和英国几个机构的模型师和实验者组成的跨学科团队将在这个项目上合作。

This is a 3-year observation and modeling research project aimed at characterizing incident, energetic protons from ground-based wide-field spectroscopic observations of H emissions, the so-called proton aurora. The modeling effort will combine a comprehensive proton transport code with a radiative transfer model to assess the contamination of H Balmer Doppler profiles from nearby proton aurora. Two high resolution ( 0.1 nm) imaging spectrographs (CESAR and HiTIES) will be deployed, first at Poker Flat and then separated by 325 km, and data from these will be combined with measurements from the Poker Flat Incoherent Scatter Radar (PFISR) as well as from the PFISR facility spectrograph to verify the theoretical predictions. This will allow for accurate derivation of mean energy and energy flux of the incoming protons from the H Doppler profiles and this result will be validated with complementary radio and space-based observations. The improved analysis technique will be employed, specifically, to quantify the energy changes of the incoming protons during active times such as during substorms. The research project will be mainly conducted by postdoctoral fellow in collaboration with and under the guidance of an international team of senior scientists with a broad range of expertise. An interdisciplinary team of modelers and experimentalists from several institutions in the United States and the United Kingdom will work together on this project.