SOLAR CHROMOSPHERIC STRUCTURES AS OBSERVED SIMULTANEOUSLY IN STRONG UV LINES .2. NETWORK AND CELL MODELING

Mean line profiles of the quiet Sun spectrum, recorded simultaneously in L alpha, L beta, Ca II H and K, and Mg II h and k lines with the OS O-8/LPSP spectrometer were derived for structures such as supergranula tion cell and network. We compare these observed profiles with theoret ical ones computed by Vernazza et al. (1981, VAL81) and by Fontenla et al. (1993, FAL93). We also present our own theoretical profiles : wit h our non-LTE radiative transfer codes, we compute the line profiles c orresponding to different atmospheric models, derived from the referen ce VAL and FAL models. Finally, we propose two new semi-empirical mode ls, NET and GEL, which are in better agreement with the network and ce ll line profiles observed by OSO-8.