Radiative Transfer Studies of Aeronomical Interest

这笔赠款将支持调整天体物理辐射传输研究的最新进展，以解决高层大气学中的几个突出问题。 具体而言，PI将研究：（1）多维辐射传输，包括极光，地日冕和暮光中的光学厚共振线，以及使用共振灯测量原子氧的问题;（2）正确考虑非LTE效应的分子带模拟;以及（3）需要解决几百到也许几千个单独的一维问题的大型一维问题的优化。 使用加速λ迭代（ALI）方法，PI将近似全散射积分，以探索快速，准确的解决方案，在天体物理学中困难的辐射传输问题。 这些方法将导致代码的发展，以解决问题的航空利益。

This grant will support the adaptation of recent advances in astrophysical radiative transfer studies to address several outstanding problems in aeronomy. Specifically, the PI will study: (1) multidimensional radiative transfer, including optically thick resonance lines in the aurora, geocorona, and twilight, as well as the problem of atomic oxygen measurements using resonance lamps; (2) molecular band simulation with correct accounting for non-LTE effects; and (3) optimization of large 1-D problems requiring the solution of several hundreds to perhaps thousands of individual 1-D problems. Using the Accelerated Lambda Iteration (ALI) method, the PI will approximate the full scattering integral to explore rapid, accurate solutions to difficult radiative transfer problems in astrophysics. These methods will lead to the development of codes to address problems on aeronomical interest.