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Numerical simulations of the K-corona and of the λ 5303 emission line corona

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Abstract

More and more observations tend to prove that the lower corona is very heterogeneous and that the active regions are quite exclusively arch-structured. So, we have attempted to see what would be the result of simulations of a corona structured only with arches. In a previous work we had made the computations for both the K-corona and the λ 5303 emission line corona, for which we have much observational data. The complexity of computations has led us to make the comparisons with observations for the vertical intensity gradients only. A priori, it seemed impossible to obtain a simulation close to reality with a corona structured only with arches, at least as we have defined them in this paper, the important fact being a conspicuous lack of matter beyond a certain height. We have made new simulations with a different electron density distribution and for a different region. These latter calculations show us that the material can be confined in the feet of very high arches or in open structures as has already been suggested.

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Author notes

  1. P. Poulain

    Present address: Observatoire de Toulouse, 1, avenue Camille-Flammarion, F 31500, Toulouse, France

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  1. Observatoires du Pic-du-Midi et de Toulouse, France

    P. Poulain

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  1. P. Poulain
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Poulain, P. Numerical simulations of the K-corona and of the λ 5303 emission line corona. Sol Phys 70, 229–235 (1981). https://doi.org/10.1007/BF00151330

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  • DOI: https://doi.org/10.1007/BF00151330

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