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

这是一个为期3年的观测和建模研究项目，旨在通过地面宽场光谱观测氢发射，即所谓的质子极光，来描述事件的高能质子。建模工作将综合质子传输代码与辐射传输模型相结合，以评估来自附近质子极光的H鲍尔默多普勒谱的污染。两台高分辨率（0.1 nm）成像光谱仪（CESAR和HiTIES）将首先部署在Poker Flat，然后相隔325公里，这些数据将与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。这将允许从H多普勒谱准确地推导出入射质子的平均能量和能量通量，这一结果将通过补充无线电和空间观测来验证。改进后的分析技术将被用来，具体地说，量化进入的质子的能量变化在活跃时间，如在亚风暴期间。该研究项目将以博士后为主体，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建模师和实验学家组成的跨学科小组将共同致力于这个项目。

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.