Prominence fine structures in a magnetic equilibrium -: III.: Lyman continuum in 2D configurations

Aims. We discuss the behavior of the Lyman continuum profiles studied on the grid of 2D vertical-thread models for prominence fine structures. Methods. Multilevel non-LTE transfer calculations for a 12-level plus continuum hydrogen model atom are used. Results. Since the Lyman continuum is formed in regions with different temperatures for different orientations between the magnetic field direction and the line-of-sight, our Lyman continuum modeling, together with additional information from Lyman lines, represents a very useful tool for the determination of the thread structure. Conclusions. A comparison between our theoretical Lyman continuum models between 800 angstrom and 911 angstrom with the observed values shows that such a modeling can give interesting new constraints on the temperature structure in prominence threads.