Line profiles and intensity ratios in prominence models with a prominence to corona interface
Title | Line profiles and intensity ratios in prominence models with a prominence to corona interface |
Publication Type | Conference Paper |
Year of Publication | 2002 |
Authors | Labrosse, N., Gouttebroze P., Heinzel P., and Vial J.-C. |
Editor | Wilson, A. |
Conference Name | Solar Variability: From Core to Outer Frontiers |
Date Published | Dec |
Abstract | In this work we study the hydrogen, helium and calcium spectra emitted by a one-dimensional prominence model in magneto-hydrostatic equilibrium. The prominence slab consists of two parts: a cool core where the plasma is optically thick for some lines, and a prominence-to-corona transition region (PCTR) with a strong temperature gradient. The models are defined by 5 parameters: temperature, pressure, slab thickness, microturbulent velocity and altitude. We solve the NLTE radiative transfer equations for all optically thick transitions. We present line ratios between infrared, optical and EUV lines, as well as line profiles. We show that the presence of a PCTR, where both collisional and radiative excitations are important, affects H, He, and Ca populations and emergent lines in different manners. |
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