Accelerating non-LTE synthesis and inversions with graph networks. (arXiv:2111.10552v2 [astro-ph.SR] UPDATED)

The computational cost of fast non-LTE synthesis is one of the challenges
that limits the development of 2D and 3D inversion codes. It also makes the
interpretation of observations of lines formed in the chromosphere and
transition region a slow and computationally costly process, which limits the
inference of the physical properties on rather small fields of view. Having
access to a fast way of computing the deviation from the LTE regime through the
departure coefficients could largely alleviate this …

arxiv graph lte networks