Mass fluxes and magnetic structures in the chromosphere and the transition region - CanopiesPreliminary results of applying a model of canopy-type magnetic lines to account for observed mass fluxes in the chromosphere and transiton region are presented. A set of center-to-limb data obtained in H-alpha and C IV, and to which the model is applied, is reported. The C IV line is assumed to form everywhere at the same height, and the H-alpha formation height is derived by assuming that the absorption coefficient is proportional to the local density. The density ratio between H-alpha and C IV levels is taken to be 100. From the results, it is concluded that the model accounts for the low ratio of radial velocities C IV/H-alpha at r = 0, the increase of H-alpha velocity near the limb, and the general center-to-limb behavior in both lines.
Document ID
19860055808
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mein, P. (Observatoire de Paris-Meudon France)
Malherbe, J.-M. (Observatoire de Paris-Meudon France)
Schmieder, B. (Observatoire de Paris-Meudon France)
Simon, G. (Paris Observatoire, Meudon, France)
Tandberg-Hanssen, E. (NASA Marshall Space Flight Center Huntsville, AL, United States)