Interpretation of Hanle effect measurements in the Solar Corona: promises and difficulties
Résumé
After having recalled the main features of the Hanle effect, and of its application to coronal lines, the promises and difficulties of the measurement interpretation in terms of magnetic field vector diagnostics, will be investigated, based on Bommier, V., Leroy, J.L., and Sahal-Bréchot, S., 1981, A&A, 100, 231, and in the light of the new instrumentation presently available or in project, as well as data-driven modeling present possibilities. The feasibility of measuring the Coronal magnetic field by interpretation of the Zeeman effect observed in the infrared, will also be investigated.