73 citations · 203 across the 4 of their papers we have counts for
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Formation of the helium EUV resonance lines
Thomas Peter Golding, Jorrit Leenaarts, Mats Carlsson
Context: While classical models successfully reproduce intensities of many transition region lines, they predict helium EUV line intensities roughly an order of magnitude lower tha…
The cause of spatial structure in solar He I 1083 nm multiplet images
Jorrit Leenaarts, Thomas Golding, Mats Carlsson +2
Context. The He i 1083 nm is a powerful diagnostic for inferring properties of the upper solar chromosphere, in particular for the magnetic field. The basic formation of the line i…
Non-equilibrium helium ionization in an MHD simulation of the solar atmosphere
Thomas Peter Golding, Jorrit Leenaarts, Mats Carlsson
The ionization state of the gas in the dynamic solar chromosphere can depart strongly from the instantaneous statistical equilibrium commonly assumed in numerical modeling. We impr…
Detailed and simplified non-equilibrium helium ionization in the solar atmosphere
Thomas Peter Golding, Mats Carlsson, Jorrit Leenaarts
Helium ionization plays an important role in the energy balance of the upper chromosphere and transition region. Helium spectral lines are also often used as diagnostics of these r…