The Effect of Solar Wind Expansion and Nonequilibrium Ionization on the Broadening of Coronal Emission Lines

@article{Gilly2020TheEO,
  title={The Effect of Solar Wind Expansion and Nonequilibrium Ionization on the Broadening of Coronal Emission Lines},
  author={Chris R. Gilly and Steven R. Cranmer},
  journal={The Astrophysical Journal},
  year={2020},
  volume={901},
  pages={150}
}
When observing spectral lines in the optically-thin corona, line-of-sight (LOS) effects can strongly affect the interpretation of the data, especially in regions just above the limb. We present a semi-empirical forward model, called GHOSTS, to characterize these effects. GHOSTS uses inputs from several other models to compute non-equilibrium ionization states (which include the solar-wind freezing-in effect) for many ions. These are used to generate ensembles of simulated spectral lines that… Expand
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