Free Access
Fig. 8
Electron density at different position angles (PA) for heights of 1.1 R⊙ and 1.3 R⊙. Coronal holes measure a density of ~3 × 107 cm-3 at 1.1 R⊙ and ~1 × 107 cm-3 at 1.3 R⊙, while the active regions reach a density of ~2 × 108 cm-3 at 1.1 R⊙ and ~9 × 107 cm-3 at 1.3 R⊙.
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.