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

✍ Scribed by P. Poulain

• Publisher: Springer
• Year: 1981
• Tongue: English
• Weight: 296 KB
• Volume: 70
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00151330

✦ Synopsis

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 A 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.