a) Electron temperature as a function of height in a number of standard models of the solar chromosphere above a sunspot umbra. (i) The model of Avrett (1981), (ii) of Maltby et al. (1986), (iii) of Severino et al. (1994), (iv) of Socas-Navarro (2007), (v) of Fontenla et al. (2009). The thin solid black line (vi) is the reference quiet-Sun atmosphere of Fontenla et al. (1993) known as FAL − C. b) The electron number density as a function of height for the same models as shown in panel a).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.